mono/mini/method-to-ir.c

   1 /**
   2  * \file
   3  * Convert CIL to the JIT internal representation
   4  *
   5  * Author:
   6  *   Paolo Molaro (lupus@ximian.com)
   7  *   Dietmar Maurer (dietmar@ximian.com)
   8  *
   9  * (C) 2002 Ximian, Inc.
  10  * Copyright 2003-2010 Novell, Inc (http://www.novell.com)
  11  * Copyright 2011 Xamarin, Inc (http://www.xamarin.com)
  12  * Licensed under the MIT license. See LICENSE file in the project root for full license information.
  13  */
  14
  15 #include <config.h>
  16 #include <mono/utils/mono-compiler.h>
  17 #include "mini.h"
  18
  19 #ifndef DISABLE_JIT
  20
  21 #include <signal.h>
  22
  23 #ifdef HAVE_UNISTD_H
  24 #include <unistd.h>
  25 #endif
  26
  27 #include <math.h>
  28 #include <string.h>
  29 #include <ctype.h>
  30
  31 #ifdef HAVE_SYS_TIME_H
  32 #include <sys/time.h>
  33 #endif
  34
  35 #ifdef HAVE_ALLOCA_H
  36 #include <alloca.h>
  37 #endif
  38
  39 #include <mono/utils/memcheck.h>
  40 #include <mono/metadata/abi-details.h>
  41 #include <mono/metadata/assembly.h>
  42 #include <mono/metadata/attrdefs.h>
  43 #include <mono/metadata/loader.h>
  44 #include <mono/metadata/tabledefs.h>
  45 #include <mono/metadata/class.h>
  46 #include <mono/metadata/object.h>
  47 #include <mono/metadata/exception.h>
  48 #include <mono/metadata/opcodes.h>
  49 #include <mono/metadata/mono-endian.h>
  50 #include <mono/metadata/tokentype.h>
  51 #include <mono/metadata/tabledefs.h>
  52 #include <mono/metadata/marshal.h>
  53 #include <mono/metadata/debug-helpers.h>
  54 #include <mono/metadata/debug-internals.h>
  55 #include <mono/metadata/gc-internals.h>
  56 #include <mono/metadata/security-manager.h>
  57 #include <mono/metadata/threads-types.h>
  58 #include <mono/metadata/security-core-clr.h>
  59 #include <mono/metadata/profiler-private.h>
  60 #include <mono/metadata/profiler.h>
  61 #include <mono/metadata/monitor.h>
  62 #include <mono/utils/mono-memory-model.h>
  63 #include <mono/utils/mono-error-internals.h>
  64 #include <mono/metadata/mono-basic-block.h>
  65 #include <mono/metadata/reflection-internals.h>
  66 #include <mono/utils/mono-threads-coop.h>
  67
  68 #include "trace.h"
  69
  70 #include "ir-emit.h"
  71
  72 #include "jit-icalls.h"
  73 #include "jit.h"
  74 #include "debugger-agent.h"
  75 #include "seq-points.h"
  76 #include "aot-compiler.h"
  77 #include "mini-llvm.h"
  78
  79 #define BRANCH_COST 10
  80 #define INLINE_LENGTH_LIMIT 20
  81
  82 /* These have 'cfg' as an implicit argument */
  83 #define INLINE_FAILURE(msg) do {                                                                        \
  84         if ((cfg->method != cfg->current_method) && (cfg->current_method->wrapper_type == MONO_WRAPPER_NONE)) { \
  85                 inline_failure (cfg, msg);                                                                              \
  86                 goto exception_exit;                                                                                    \
  87         } \
  88         } while (0)
  89 #define CHECK_CFG_EXCEPTION do {\
  90                 if (cfg->exception_type != MONO_EXCEPTION_NONE) \
  91                         goto exception_exit;                                            \
  92         } while (0)
  93 #define FIELD_ACCESS_FAILURE(method, field) do {                                        \
  94                 field_access_failure ((cfg), (method), (field));                        \
  95                 goto exception_exit;    \
  96         } while (0)
  97 #define GENERIC_SHARING_FAILURE(opcode) do {            \
  98                 if (cfg->gshared) {                                                                     \
  99                         gshared_failure (cfg, opcode, __FILE__, __LINE__);      \
 100                         goto exception_exit;    \
 101                 }                       \
 102         } while (0)
 103 #define GSHAREDVT_FAILURE(opcode) do {          \
 104         if (cfg->gsharedvt) {                                                                                           \
 105                 gsharedvt_failure (cfg, opcode, __FILE__, __LINE__);                    \
 106                 goto exception_exit;                                                                                    \
 107         }                                                                                                                                       \
 108         } while (0)
 109 #define OUT_OF_MEMORY_FAILURE do {      \
 110                 mono_cfg_set_exception (cfg, MONO_EXCEPTION_MONO_ERROR);                \
 111                 mono_error_set_out_of_memory (&cfg->error, "");                                 \
 112                 goto exception_exit;    \
 113         } while (0)
 114 #define DISABLE_AOT(cfg) do { \
 115                 if ((cfg)->verbose_level >= 2)                                            \
 116                         printf ("AOT disabled: %s:%d\n", __FILE__, __LINE__);   \
 117                 (cfg)->disable_aot = TRUE;                                                        \
 118         } while (0)
 119 #define LOAD_ERROR do { \
 120                 break_on_unverified ();                                                         \
 121                 mono_cfg_set_exception (cfg, MONO_EXCEPTION_TYPE_LOAD); \
 122                 goto exception_exit;                                                                    \
 123         } while (0)
 124
 125 #define TYPE_LOAD_ERROR(klass) do { \
 126                 cfg->exception_ptr = klass; \
 127                 LOAD_ERROR;                                     \
 128         } while (0)
 129
 130 #define CHECK_CFG_ERROR do {\
 131                 if (!mono_error_ok (&cfg->error)) { \
 132                         mono_cfg_set_exception (cfg, MONO_EXCEPTION_MONO_ERROR);        \
 133                         goto mono_error_exit; \
 134                 } \
 135         } while (0)
 136
 137 /* Determine whenever 'ins' represents a load of the 'this' argument */
 138 #define MONO_CHECK_THIS(ins) (mono_method_signature (cfg->method)->hasthis && ((ins)->opcode == OP_MOVE) && ((ins)->sreg1 == cfg->args [0]->dreg))
 139
 140 static int ldind_to_load_membase (int opcode);
 141 static int stind_to_store_membase (int opcode);
 142
 143 int mono_op_to_op_imm (int opcode);
 144 int mono_op_to_op_imm_noemul (int opcode);
 145
 146 static int inline_method (MonoCompile *cfg, MonoMethod *cmethod, MonoMethodSignature *fsig, MonoInst **sp,
 147                                                   guchar *ip, guint real_offset, gboolean inline_always);
 148 static MonoInst*
 149 emit_llvmonly_virtual_call (MonoCompile *cfg, MonoMethod *cmethod, MonoMethodSignature *fsig, int context_used, MonoInst **sp);
 150
 151 /* helper methods signatures */
 152 static MonoMethodSignature *helper_sig_domain_get;
 153 static MonoMethodSignature *helper_sig_rgctx_lazy_fetch_trampoline;
 154 static MonoMethodSignature *helper_sig_llvmonly_imt_trampoline;
 155 static MonoMethodSignature *helper_sig_jit_thread_attach;
 156 static MonoMethodSignature *helper_sig_get_tls_tramp;
 157 static MonoMethodSignature *helper_sig_set_tls_tramp;
 158
 159 /* type loading helpers */
 160 static GENERATE_GET_CLASS_WITH_CACHE (runtime_helpers, "System.Runtime.CompilerServices", "RuntimeHelpers")
 161 static GENERATE_TRY_GET_CLASS_WITH_CACHE (debuggable_attribute, "System.Diagnostics", "DebuggableAttribute")
 162
 163 /*
 164  * Instruction metadata
 165  */
 166 #ifdef MINI_OP
 167 #undef MINI_OP
 168 #endif
 169 #ifdef MINI_OP3
 170 #undef MINI_OP3
 171 #endif
 172 #define MINI_OP(a,b,dest,src1,src2) dest, src1, src2, ' ',
 173 #define MINI_OP3(a,b,dest,src1,src2,src3) dest, src1, src2, src3,
 174 #define NONE ' '
 175 #define IREG 'i'
 176 #define FREG 'f'
 177 #define VREG 'v'
 178 #define XREG 'x'
 179 #if SIZEOF_REGISTER == 8 && SIZEOF_REGISTER == SIZEOF_VOID_P
 180 #define LREG IREG
 181 #else
 182 #define LREG 'l'
 183 #endif
 184 /* keep in sync with the enum in mini.h */
 185 const char
 186 ins_info[] = {
 187 #include "mini-ops.h"
 188 };
 189 #undef MINI_OP
 190 #undef MINI_OP3
 191
 192 #define MINI_OP(a,b,dest,src1,src2) ((src2) != NONE ? 2 : ((src1) != NONE ? 1 : 0)),
 193 #define MINI_OP3(a,b,dest,src1,src2,src3) ((src3) != NONE ? 3 : ((src2) != NONE ? 2 : ((src1) != NONE ? 1 : 0))),
 194 /*
 195  * This should contain the index of the last sreg + 1. This is not the same
 196  * as the number of sregs for opcodes like IA64_CMP_EQ_IMM.
 197  */
 198 const gint8 ins_sreg_counts[] = {
 199 #include "mini-ops.h"
 200 };
 201 #undef MINI_OP
 202 #undef MINI_OP3
 203
 204 guint32
 205 mono_alloc_ireg (MonoCompile *cfg)
 206 {
 207         return alloc_ireg (cfg);
 208 }
 209
 210 guint32
 211 mono_alloc_lreg (MonoCompile *cfg)
 212 {
 213         return alloc_lreg (cfg);
 214 }
 215
 216 guint32
 217 mono_alloc_freg (MonoCompile *cfg)
 218 {
 219         return alloc_freg (cfg);
 220 }
 221
 222 guint32
 223 mono_alloc_preg (MonoCompile *cfg)
 224 {
 225         return alloc_preg (cfg);
 226 }
 227
 228 guint32
 229 mono_alloc_dreg (MonoCompile *cfg, MonoStackType stack_type)
 230 {
 231         return alloc_dreg (cfg, stack_type);
 232 }
 233
 234 /*
 235  * mono_alloc_ireg_ref:
 236  *
 237  *   Allocate an IREG, and mark it as holding a GC ref.
 238  */
 239 guint32
 240 mono_alloc_ireg_ref (MonoCompile *cfg)
 241 {
 242         return alloc_ireg_ref (cfg);
 243 }
 244
 245 /*
 246  * mono_alloc_ireg_mp:
 247  *
 248  *   Allocate an IREG, and mark it as holding a managed pointer.
 249  */
 250 guint32
 251 mono_alloc_ireg_mp (MonoCompile *cfg)
 252 {
 253         return alloc_ireg_mp (cfg);
 254 }
 255
 256 /*
 257  * mono_alloc_ireg_copy:
 258  *
 259  *   Allocate an IREG with the same GC type as VREG.
 260  */
 261 guint32
 262 mono_alloc_ireg_copy (MonoCompile *cfg, guint32 vreg)
 263 {
 264         if (vreg_is_ref (cfg, vreg))
 265                 return alloc_ireg_ref (cfg);
 266         else if (vreg_is_mp (cfg, vreg))
 267                 return alloc_ireg_mp (cfg);
 268         else
 269                 return alloc_ireg (cfg);
 270 }
 271
 272 guint
 273 mono_type_to_regmove (MonoCompile *cfg, MonoType *type)
 274 {
 275         if (type->byref)
 276                 return OP_MOVE;
 277
 278         type = mini_get_underlying_type (type);
 279 handle_enum:
 280         switch (type->type) {
 281         case MONO_TYPE_I1:
 282         case MONO_TYPE_U1:
 283                 return OP_MOVE;
 284         case MONO_TYPE_I2:
 285         case MONO_TYPE_U2:
 286                 return OP_MOVE;
 287         case MONO_TYPE_I4:
 288         case MONO_TYPE_U4:
 289                 return OP_MOVE;
 290         case MONO_TYPE_I:
 291         case MONO_TYPE_U:
 292         case MONO_TYPE_PTR:
 293         case MONO_TYPE_FNPTR:
 294                 return OP_MOVE;
 295         case MONO_TYPE_CLASS:
 296         case MONO_TYPE_STRING:
 297         case MONO_TYPE_OBJECT:
 298         case MONO_TYPE_SZARRAY:
 299         case MONO_TYPE_ARRAY:
 300                 return OP_MOVE;
 301         case MONO_TYPE_I8:
 302         case MONO_TYPE_U8:
 303 #if SIZEOF_REGISTER == 8
 304                 return OP_MOVE;
 305 #else
 306                 return OP_LMOVE;
 307 #endif
 308         case MONO_TYPE_R4:
 309                 return cfg->r4fp ? OP_RMOVE : OP_FMOVE;
 310         case MONO_TYPE_R8:
 311                 return OP_FMOVE;
 312         case MONO_TYPE_VALUETYPE:
 313                 if (type->data.klass->enumtype) {
 314                         type = mono_class_enum_basetype (type->data.klass);
 315                         goto handle_enum;
 316                 }
 317                 if (MONO_CLASS_IS_SIMD (cfg, mono_class_from_mono_type (type)))
 318                         return OP_XMOVE;
 319                 return OP_VMOVE;
 320         case MONO_TYPE_TYPEDBYREF:
 321                 return OP_VMOVE;
 322         case MONO_TYPE_GENERICINST:
 323                 if (MONO_CLASS_IS_SIMD (cfg, mono_class_from_mono_type (type)))
 324                         return OP_XMOVE;
 325                 type = &type->data.generic_class->container_class->byval_arg;
 326                 goto handle_enum;
 327         case MONO_TYPE_VAR:
 328         case MONO_TYPE_MVAR:
 329                 g_assert (cfg->gshared);
 330                 if (mini_type_var_is_vt (type))
 331                         return OP_VMOVE;
 332                 else
 333                         return mono_type_to_regmove (cfg, mini_get_underlying_type (type));
 334         default:
 335                 g_error ("unknown type 0x%02x in type_to_regstore", type->type);
 336         }
 337         return -1;
 338 }
 339
 340 void
 341 mono_print_bb (MonoBasicBlock *bb, const char *msg)
 342 {
 343         int i;
 344         MonoInst *tree;
 345         GString *str = g_string_new ("");
 346
 347         g_string_append_printf (str, "%s %d: [IN: ", msg, bb->block_num);
 348         for (i = 0; i < bb->in_count; ++i)
 349                 g_string_append_printf (str, " BB%d(%d)", bb->in_bb [i]->block_num, bb->in_bb [i]->dfn);
 350         g_string_append_printf (str, ", OUT: ");
 351         for (i = 0; i < bb->out_count; ++i)
 352                 g_string_append_printf (str, " BB%d(%d)", bb->out_bb [i]->block_num, bb->out_bb [i]->dfn);
 353         g_string_append_printf (str, " ]\n");
 354
 355         g_print ("%s", str->str);
 356         g_string_free (str, TRUE);
 357
 358         for (tree = bb->code; tree; tree = tree->next)
 359                 mono_print_ins_index (-1, tree);
 360 }
 361
 362 void
 363 mono_create_helper_signatures (void)
 364 {
 365         helper_sig_domain_get = mono_create_icall_signature ("ptr");
 366         helper_sig_rgctx_lazy_fetch_trampoline = mono_create_icall_signature ("ptr ptr");
 367         helper_sig_llvmonly_imt_trampoline = mono_create_icall_signature ("ptr ptr ptr");
 368         helper_sig_jit_thread_attach = mono_create_icall_signature ("ptr ptr");
 369         helper_sig_get_tls_tramp = mono_create_icall_signature ("ptr");
 370         helper_sig_set_tls_tramp = mono_create_icall_signature ("void ptr");
 371 }
 372
 373 static MONO_NEVER_INLINE void
 374 break_on_unverified (void)
 375 {
 376         if (mini_get_debug_options ()->break_on_unverified)
 377                 G_BREAKPOINT ();
 378 }
 379
 380 static MONO_NEVER_INLINE void
 381 field_access_failure (MonoCompile *cfg, MonoMethod *method, MonoClassField *field)
 382 {
 383         char *method_fname = mono_method_full_name (method, TRUE);
 384         char *field_fname = mono_field_full_name (field);
 385         mono_cfg_set_exception (cfg, MONO_EXCEPTION_MONO_ERROR);
 386         mono_error_set_generic_error (&cfg->error, "System", "FieldAccessException", "Field `%s' is inaccessible from method `%s'\n", field_fname, method_fname);
 387         g_free (method_fname);
 388         g_free (field_fname);
 389 }
 390
 391 static MONO_NEVER_INLINE void
 392 inline_failure (MonoCompile *cfg, const char *msg)
 393 {
 394         if (cfg->verbose_level >= 2)
 395                 printf ("inline failed: %s\n", msg);
 396         mono_cfg_set_exception (cfg, MONO_EXCEPTION_INLINE_FAILED);
 397 }
 398
 399 static MONO_NEVER_INLINE void
 400 gshared_failure (MonoCompile *cfg, int opcode, const char *file, int line)
 401 {
 402         if (cfg->verbose_level > 2)                                                                                     \
 403                 printf ("sharing failed for method %s.%s.%s/%d opcode %s line %d\n", cfg->current_method->klass->name_space, cfg->current_method->klass->name, cfg->current_method->name, cfg->current_method->signature->param_count, mono_opcode_name ((opcode)), line);
 404         mono_cfg_set_exception (cfg, MONO_EXCEPTION_GENERIC_SHARING_FAILED);
 405 }
 406
 407 static MONO_NEVER_INLINE void
 408 gsharedvt_failure (MonoCompile *cfg, int opcode, const char *file, int line)
 409 {
 410         cfg->exception_message = g_strdup_printf ("gsharedvt failed for method %s.%s.%s/%d opcode %s %s:%d", cfg->current_method->klass->name_space, cfg->current_method->klass->name, cfg->current_method->name, cfg->current_method->signature->param_count, mono_opcode_name ((opcode)), file, line);
 411         if (cfg->verbose_level >= 2)
 412                 printf ("%s\n", cfg->exception_message);
 413         mono_cfg_set_exception (cfg, MONO_EXCEPTION_GENERIC_SHARING_FAILED);
 414 }
 415
 416 /*
 417  * When using gsharedvt, some instatiations might be verifiable, and some might be not. i.e.
 418  * foo<T> (int i) { ldarg.0; box T; }
 419  */
 420 #define UNVERIFIED do { \
 421         if (cfg->gsharedvt) { \
 422                 if (cfg->verbose_level > 2)                                                                     \
 423                         printf ("gsharedvt method failed to verify, falling back to instantiation.\n"); \
 424                 mono_cfg_set_exception (cfg, MONO_EXCEPTION_GENERIC_SHARING_FAILED); \
 425                 goto exception_exit;                                                                                    \
 426         }                                                                                                                                       \
 427         break_on_unverified ();                                                                                         \
 428         goto unverified;                                                                                                        \
 429 } while (0)
 430
 431 #define GET_BBLOCK(cfg,tblock,ip) do {  \
 432                 (tblock) = cfg->cil_offset_to_bb [(ip) - cfg->cil_start]; \
 433                 if (!(tblock)) {        \
 434                         if ((ip) >= end || (ip) < header->code) UNVERIFIED; \
 435             NEW_BBLOCK (cfg, (tblock)); \
 436                         (tblock)->cil_code = (ip);      \
 437                         ADD_BBLOCK (cfg, (tblock));     \
 438                 } \
 439         } while (0)
 440
 441 #if defined(TARGET_X86) || defined(TARGET_AMD64)
 442 #define EMIT_NEW_X86_LEA(cfg,dest,sr1,sr2,shift,imm) do { \
 443                 MONO_INST_NEW (cfg, dest, OP_X86_LEA); \
 444                 (dest)->dreg = alloc_ireg_mp ((cfg)); \
 445                 (dest)->sreg1 = (sr1); \
 446                 (dest)->sreg2 = (sr2); \
 447                 (dest)->inst_imm = (imm); \
 448                 (dest)->backend.shift_amount = (shift); \
 449                 MONO_ADD_INS ((cfg)->cbb, (dest)); \
 450         } while (0)
 451 #endif
 452
 453 /* Emit conversions so both operands of a binary opcode are of the same type */
 454 static void
 455 add_widen_op (MonoCompile *cfg, MonoInst *ins, MonoInst **arg1_ref, MonoInst **arg2_ref)
 456 {
 457         MonoInst *arg1 = *arg1_ref;
 458         MonoInst *arg2 = *arg2_ref;
 459
 460         if (cfg->r4fp &&
 461                 ((arg1->type == STACK_R4 && arg2->type == STACK_R8) ||
 462                  (arg1->type == STACK_R8 && arg2->type == STACK_R4))) {
 463                 MonoInst *conv;
 464
 465                 /* Mixing r4/r8 is allowed by the spec */
 466                 if (arg1->type == STACK_R4) {
 467                         int dreg = alloc_freg (cfg);
 468
 469                         EMIT_NEW_UNALU (cfg, conv, OP_RCONV_TO_R8, dreg, arg1->dreg);
 470                         conv->type = STACK_R8;
 471                         ins->sreg1 = dreg;
 472                         *arg1_ref = conv;
 473                 }
 474                 if (arg2->type == STACK_R4) {
 475                         int dreg = alloc_freg (cfg);
 476
 477                         EMIT_NEW_UNALU (cfg, conv, OP_RCONV_TO_R8, dreg, arg2->dreg);
 478                         conv->type = STACK_R8;
 479                         ins->sreg2 = dreg;
 480                         *arg2_ref = conv;
 481                 }
 482         }
 483
 484 #if SIZEOF_REGISTER == 8
 485         /* FIXME: Need to add many more cases */
 486         if ((arg1)->type == STACK_PTR && (arg2)->type == STACK_I4) {
 487                 MonoInst *widen;
 488
 489                 int dr = alloc_preg (cfg);
 490                 EMIT_NEW_UNALU (cfg, widen, OP_SEXT_I4, dr, (arg2)->dreg);
 491                 (ins)->sreg2 = widen->dreg;
 492         }
 493 #endif
 494 }
 495
 496 #define ADD_BINOP(op) do {      \
 497                 MONO_INST_NEW (cfg, ins, (op)); \
 498                 sp -= 2;        \
 499                 ins->sreg1 = sp [0]->dreg;      \
 500                 ins->sreg2 = sp [1]->dreg;      \
 501                 type_from_op (cfg, ins, sp [0], sp [1]);        \
 502                 CHECK_TYPE (ins);       \
 503                 /* Have to insert a widening op */               \
 504         add_widen_op (cfg, ins, &sp [0], &sp [1]);               \
 505         ins->dreg = alloc_dreg ((cfg), (MonoStackType)(ins)->type); \
 506         MONO_ADD_INS ((cfg)->cbb, (ins)); \
 507         *sp++ = mono_decompose_opcode ((cfg), (ins));   \
 508         } while (0)
 509
 510 #define ADD_UNOP(op) do {       \
 511                 MONO_INST_NEW (cfg, ins, (op)); \
 512                 sp--;   \
 513                 ins->sreg1 = sp [0]->dreg;      \
 514                 type_from_op (cfg, ins, sp [0], NULL);  \
 515                 CHECK_TYPE (ins);       \
 516         (ins)->dreg = alloc_dreg ((cfg), (MonoStackType)(ins)->type); \
 517         MONO_ADD_INS ((cfg)->cbb, (ins)); \
 518                 *sp++ = mono_decompose_opcode (cfg, ins);       \
 519         } while (0)
 520
 521 #define ADD_BINCOND(next_block) do {    \
 522                 MonoInst *cmp;  \
 523                 sp -= 2; \
 524                 MONO_INST_NEW(cfg, cmp, OP_COMPARE);    \
 525                 cmp->sreg1 = sp [0]->dreg;      \
 526                 cmp->sreg2 = sp [1]->dreg;      \
 527                 type_from_op (cfg, cmp, sp [0], sp [1]);        \
 528                 CHECK_TYPE (cmp);       \
 529                 add_widen_op (cfg, cmp, &sp [0], &sp [1]);                                              \
 530                 type_from_op (cfg, ins, sp [0], sp [1]);                                                        \
 531                 ins->inst_many_bb = (MonoBasicBlock **)mono_mempool_alloc (cfg->mempool, sizeof(gpointer)*2);   \
 532                 GET_BBLOCK (cfg, tblock, target);               \
 533                 link_bblock (cfg, cfg->cbb, tblock);    \
 534                 ins->inst_true_bb = tblock;     \
 535                 if ((next_block)) {     \
 536                         link_bblock (cfg, cfg->cbb, (next_block));      \
 537                         ins->inst_false_bb = (next_block);      \
 538                         start_new_bblock = 1;   \
 539                 } else {        \
 540                         GET_BBLOCK (cfg, tblock, ip);           \
 541                         link_bblock (cfg, cfg->cbb, tblock);    \
 542                         ins->inst_false_bb = tblock;    \
 543                         start_new_bblock = 2;   \
 544                 }       \
 545                 if (sp != stack_start) {                                                                        \
 546                     handle_stack_args (cfg, stack_start, sp - stack_start); \
 547                         CHECK_UNVERIFIABLE (cfg); \
 548                 } \
 549         MONO_ADD_INS (cfg->cbb, cmp); \
 550                 MONO_ADD_INS (cfg->cbb, ins);   \
 551         } while (0)
 552
 553 /* *
 554  * link_bblock: Links two basic blocks
 555  *
 556  * links two basic blocks in the control flow graph, the 'from'
 557  * argument is the starting block and the 'to' argument is the block
 558  * the control flow ends to after 'from'.
 559  */
 560 static void
 561 link_bblock (MonoCompile *cfg, MonoBasicBlock *from, MonoBasicBlock* to)
 562 {
 563         MonoBasicBlock **newa;
 564         int i, found;
 565
 566 #if 0
 567         if (from->cil_code) {
 568                 if (to->cil_code)
 569                         printf ("edge from IL%04x to IL_%04x\n", from->cil_code - cfg->cil_code, to->cil_code - cfg->cil_code);
 570                 else
 571                         printf ("edge from IL%04x to exit\n", from->cil_code - cfg->cil_code);
 572         } else {
 573                 if (to->cil_code)
 574                         printf ("edge from entry to IL_%04x\n", to->cil_code - cfg->cil_code);
 575                 else
 576                         printf ("edge from entry to exit\n");
 577         }
 578 #endif
 579
 580         found = FALSE;
 581         for (i = 0; i < from->out_count; ++i) {
 582                 if (to == from->out_bb [i]) {
 583                         found = TRUE;
 584                         break;
 585                 }
 586         }
 587         if (!found) {
 588                 newa = (MonoBasicBlock **)mono_mempool_alloc (cfg->mempool, sizeof (gpointer) * (from->out_count + 1));
 589                 for (i = 0; i < from->out_count; ++i) {
 590                         newa [i] = from->out_bb [i];
 591                 }
 592                 newa [i] = to;
 593                 from->out_count++;
 594                 from->out_bb = newa;
 595         }
 596
 597         found = FALSE;
 598         for (i = 0; i < to->in_count; ++i) {
 599                 if (from == to->in_bb [i]) {
 600                         found = TRUE;
 601                         break;
 602                 }
 603         }
 604         if (!found) {
 605                 newa = (MonoBasicBlock **)mono_mempool_alloc (cfg->mempool, sizeof (gpointer) * (to->in_count + 1));
 606                 for (i = 0; i < to->in_count; ++i) {
 607                         newa [i] = to->in_bb [i];
 608                 }
 609                 newa [i] = from;
 610                 to->in_count++;
 611                 to->in_bb = newa;
 612         }
 613 }
 614
 615 void
 616 mono_link_bblock (MonoCompile *cfg, MonoBasicBlock *from, MonoBasicBlock* to)
 617 {
 618         link_bblock (cfg, from, to);
 619 }
 620
 621 /**
 622  * mono_find_block_region:
 623  *
 624  *   We mark each basic block with a region ID. We use that to avoid BB
 625  *   optimizations when blocks are in different regions.
 626  *
 627  * Returns:
 628  *   A region token that encodes where this region is, and information
 629  *   about the clause owner for this block.
 630  *
 631  *   The region encodes the try/catch/filter clause that owns this block
 632  *   as well as the type.  -1 is a special value that represents a block
 633  *   that is in none of try/catch/filter.
 634  */
 635 static int
 636 mono_find_block_region (MonoCompile *cfg, int offset)
 637 {
 638         MonoMethodHeader *header = cfg->header;
 639         MonoExceptionClause *clause;
 640         int i;
 641
 642         for (i = 0; i < header->num_clauses; ++i) {
 643                 clause = &header->clauses [i];
 644                 if ((clause->flags == MONO_EXCEPTION_CLAUSE_FILTER) && (offset >= clause->data.filter_offset) &&
 645                     (offset < (clause->handler_offset)))
 646                         return ((i + 1) << 8) | MONO_REGION_FILTER | clause->flags;
 647
 648                 if (MONO_OFFSET_IN_HANDLER (clause, offset)) {
 649                         if (clause->flags == MONO_EXCEPTION_CLAUSE_FINALLY)
 650                                 return ((i + 1) << 8) | MONO_REGION_FINALLY | clause->flags;
 651                         else if (clause->flags == MONO_EXCEPTION_CLAUSE_FAULT)
 652                                 return ((i + 1) << 8) | MONO_REGION_FAULT | clause->flags;
 653                         else
 654                                 return ((i + 1) << 8) | MONO_REGION_CATCH | clause->flags;
 655                 }
 656         }
 657         for (i = 0; i < header->num_clauses; ++i) {
 658                 clause = &header->clauses [i];
 659
 660                 if (MONO_OFFSET_IN_CLAUSE (clause, offset))
 661                         return ((i + 1) << 8) | clause->flags;
 662         }
 663
 664         return -1;
 665 }
 666
 667 static gboolean
 668 ip_in_finally_clause (MonoCompile *cfg, int offset)
 669 {
 670         MonoMethodHeader *header = cfg->header;
 671         MonoExceptionClause *clause;
 672         int i;
 673
 674         for (i = 0; i < header->num_clauses; ++i) {
 675                 clause = &header->clauses [i];
 676                 if (clause->flags != MONO_EXCEPTION_CLAUSE_FINALLY && clause->flags != MONO_EXCEPTION_CLAUSE_FAULT)
 677                         continue;
 678
 679                 if (MONO_OFFSET_IN_HANDLER (clause, offset))
 680                         return TRUE;
 681         }
 682         return FALSE;
 683 }
 684
 685 static GList*
 686 mono_find_final_block (MonoCompile *cfg, unsigned char *ip, unsigned char *target, int type)
 687 {
 688         MonoMethodHeader *header = cfg->header;
 689         MonoExceptionClause *clause;
 690         int i;
 691         GList *res = NULL;
 692
 693         for (i = 0; i < header->num_clauses; ++i) {
 694                 clause = &header->clauses [i];
 695                 if (MONO_OFFSET_IN_CLAUSE (clause, (ip - header->code)) &&
 696                     (!MONO_OFFSET_IN_CLAUSE (clause, (target - header->code)))) {
 697                         if (clause->flags == type)
 698                                 res = g_list_append (res, clause);
 699                 }
 700         }
 701         return res;
 702 }
 703
 704 static void
 705 mono_create_spvar_for_region (MonoCompile *cfg, int region)
 706 {
 707         MonoInst *var;
 708
 709         var = (MonoInst *)g_hash_table_lookup (cfg->spvars, GINT_TO_POINTER (region));
 710         if (var)
 711                 return;
 712
 713         var = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
 714         /* prevent it from being register allocated */
 715         var->flags |= MONO_INST_VOLATILE;
 716
 717         g_hash_table_insert (cfg->spvars, GINT_TO_POINTER (region), var);
 718 }
 719
 720 MonoInst *
 721 mono_find_exvar_for_offset (MonoCompile *cfg, int offset)
 722 {
 723         return (MonoInst *)g_hash_table_lookup (cfg->exvars, GINT_TO_POINTER (offset));
 724 }
 725
 726 static MonoInst*
 727 mono_create_exvar_for_offset (MonoCompile *cfg, int offset)
 728 {
 729         MonoInst *var;
 730
 731         var = (MonoInst *)g_hash_table_lookup (cfg->exvars, GINT_TO_POINTER (offset));
 732         if (var)
 733                 return var;
 734
 735         var = mono_compile_create_var (cfg, &mono_defaults.object_class->byval_arg, OP_LOCAL);
 736         /* prevent it from being register allocated */
 737         var->flags |= MONO_INST_VOLATILE;
 738
 739         g_hash_table_insert (cfg->exvars, GINT_TO_POINTER (offset), var);
 740
 741         return var;
 742 }
 743
 744 /*
 745  * Returns the type used in the eval stack when @type is loaded.
 746  * FIXME: return a MonoType/MonoClass for the byref and VALUETYPE cases.
 747  */
 748 void
 749 type_to_eval_stack_type (MonoCompile *cfg, MonoType *type, MonoInst *inst)
 750 {
 751         MonoClass *klass;
 752
 753         type = mini_get_underlying_type (type);
 754         inst->klass = klass = mono_class_from_mono_type (type);
 755         if (type->byref) {
 756                 inst->type = STACK_MP;
 757                 return;
 758         }
 759
 760 handle_enum:
 761         switch (type->type) {
 762         case MONO_TYPE_VOID:
 763                 inst->type = STACK_INV;
 764                 return;
 765         case MONO_TYPE_I1:
 766         case MONO_TYPE_U1:
 767         case MONO_TYPE_I2:
 768         case MONO_TYPE_U2:
 769         case MONO_TYPE_I4:
 770         case MONO_TYPE_U4:
 771                 inst->type = STACK_I4;
 772                 return;
 773         case MONO_TYPE_I:
 774         case MONO_TYPE_U:
 775         case MONO_TYPE_PTR:
 776         case MONO_TYPE_FNPTR:
 777                 inst->type = STACK_PTR;
 778                 return;
 779         case MONO_TYPE_CLASS:
 780         case MONO_TYPE_STRING:
 781         case MONO_TYPE_OBJECT:
 782         case MONO_TYPE_SZARRAY:
 783         case MONO_TYPE_ARRAY:
 784                 inst->type = STACK_OBJ;
 785                 return;
 786         case MONO_TYPE_I8:
 787         case MONO_TYPE_U8:
 788                 inst->type = STACK_I8;
 789                 return;
 790         case MONO_TYPE_R4:
 791                 inst->type = cfg->r4_stack_type;
 792                 break;
 793         case MONO_TYPE_R8:
 794                 inst->type = STACK_R8;
 795                 return;
 796         case MONO_TYPE_VALUETYPE:
 797                 if (type->data.klass->enumtype) {
 798                         type = mono_class_enum_basetype (type->data.klass);
 799                         goto handle_enum;
 800                 } else {
 801                         inst->klass = klass;
 802                         inst->type = STACK_VTYPE;
 803                         return;
 804                 }
 805         case MONO_TYPE_TYPEDBYREF:
 806                 inst->klass = mono_defaults.typed_reference_class;
 807                 inst->type = STACK_VTYPE;
 808                 return;
 809         case MONO_TYPE_GENERICINST:
 810                 type = &type->data.generic_class->container_class->byval_arg;
 811                 goto handle_enum;
 812         case MONO_TYPE_VAR:
 813         case MONO_TYPE_MVAR:
 814                 g_assert (cfg->gshared);
 815                 if (mini_is_gsharedvt_type (type)) {
 816                         g_assert (cfg->gsharedvt);
 817                         inst->type = STACK_VTYPE;
 818                 } else {
 819                         type_to_eval_stack_type (cfg, mini_get_underlying_type (type), inst);
 820                 }
 821                 return;
 822         default:
 823                 g_error ("unknown type 0x%02x in eval stack type", type->type);
 824         }
 825 }
 826
 827 /*
 828  * The following tables are used to quickly validate the IL code in type_from_op ().
 829  */
 830 static const char
 831 bin_num_table [STACK_MAX] [STACK_MAX] = {
 832         {STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 833         {STACK_INV, STACK_I4,  STACK_INV, STACK_PTR, STACK_INV, STACK_MP,  STACK_INV, STACK_INV},
 834         {STACK_INV, STACK_INV, STACK_I8,  STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 835         {STACK_INV, STACK_PTR, STACK_INV, STACK_PTR, STACK_INV, STACK_MP,  STACK_INV, STACK_INV},
 836         {STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_R8,  STACK_INV, STACK_INV, STACK_INV, STACK_R8},
 837         {STACK_INV, STACK_MP,  STACK_INV, STACK_MP,  STACK_INV, STACK_PTR, STACK_INV, STACK_INV},
 838         {STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 839         {STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 840         {STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_R8, STACK_INV, STACK_INV, STACK_INV, STACK_R4}
 841 };
 842
 843 static const char
 844 neg_table [] = {
 845         STACK_INV, STACK_I4, STACK_I8, STACK_PTR, STACK_R8, STACK_INV, STACK_INV, STACK_INV, STACK_R4
 846 };
 847
 848 /* reduce the size of this table */
 849 static const char
 850 bin_int_table [STACK_MAX] [STACK_MAX] = {
 851         {STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 852         {STACK_INV, STACK_I4,  STACK_INV, STACK_PTR, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 853         {STACK_INV, STACK_INV, STACK_I8,  STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 854         {STACK_INV, STACK_PTR, STACK_INV, STACK_PTR, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 855         {STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 856         {STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 857         {STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 858         {STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV}
 859 };
 860
 861 static const char
 862 bin_comp_table [STACK_MAX] [STACK_MAX] = {
 863 /*      Inv i  L  p  F  &  O  vt r4 */
 864         {0},
 865         {0, 1, 0, 1, 0, 0, 0, 0}, /* i, int32 */
 866         {0, 0, 1, 0, 0, 0, 0, 0}, /* L, int64 */
 867         {0, 1, 0, 1, 0, 2, 4, 0}, /* p, ptr */
 868         {0, 0, 0, 0, 1, 0, 0, 0, 1}, /* F, R8 */
 869         {0, 0, 0, 2, 0, 1, 0, 0}, /* &, managed pointer */
 870         {0, 0, 0, 4, 0, 0, 3, 0}, /* O, reference */
 871         {0, 0, 0, 0, 0, 0, 0, 0}, /* vt value type */
 872         {0, 0, 0, 0, 1, 0, 0, 0, 1}, /* r, r4 */
 873 };
 874
 875 /* reduce the size of this table */
 876 static const char
 877 shift_table [STACK_MAX] [STACK_MAX] = {
 878         {STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 879         {STACK_INV, STACK_I4,  STACK_INV, STACK_I4,  STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 880         {STACK_INV, STACK_I8,  STACK_INV, STACK_I8,  STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 881         {STACK_INV, STACK_PTR, STACK_INV, STACK_PTR, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 882         {STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 883         {STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 884         {STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 885         {STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV}
 886 };
 887
 888 /*
 889  * Tables to map from the non-specific opcode to the matching
 890  * type-specific opcode.
 891  */
 892 /* handles from CEE_ADD to CEE_SHR_UN (CEE_REM_UN for floats) */
 893 static const guint16
 894 binops_op_map [STACK_MAX] = {
 895         0, OP_IADD-CEE_ADD, OP_LADD-CEE_ADD, OP_PADD-CEE_ADD, OP_FADD-CEE_ADD, OP_PADD-CEE_ADD, 0, 0, OP_RADD-CEE_ADD
 896 };
 897
 898 /* handles from CEE_NEG to CEE_CONV_U8 */
 899 static const guint16
 900 unops_op_map [STACK_MAX] = {
 901         0, OP_INEG-CEE_NEG, OP_LNEG-CEE_NEG, OP_PNEG-CEE_NEG, OP_FNEG-CEE_NEG, OP_PNEG-CEE_NEG, 0, 0, OP_RNEG-CEE_NEG
 902 };
 903
 904 /* handles from CEE_CONV_U2 to CEE_SUB_OVF_UN */
 905 static const guint16
 906 ovfops_op_map [STACK_MAX] = {
 907         0, OP_ICONV_TO_U2-CEE_CONV_U2, OP_LCONV_TO_U2-CEE_CONV_U2, OP_PCONV_TO_U2-CEE_CONV_U2, OP_FCONV_TO_U2-CEE_CONV_U2, OP_PCONV_TO_U2-CEE_CONV_U2, OP_PCONV_TO_U2-CEE_CONV_U2, 0, OP_RCONV_TO_U2-CEE_CONV_U2
 908 };
 909
 910 /* handles from CEE_CONV_OVF_I1_UN to CEE_CONV_OVF_U_UN */
 911 static const guint16
 912 ovf2ops_op_map [STACK_MAX] = {
 913         0, OP_ICONV_TO_OVF_I1_UN-CEE_CONV_OVF_I1_UN, OP_LCONV_TO_OVF_I1_UN-CEE_CONV_OVF_I1_UN, OP_PCONV_TO_OVF_I1_UN-CEE_CONV_OVF_I1_UN, OP_FCONV_TO_OVF_I1_UN-CEE_CONV_OVF_I1_UN, OP_PCONV_TO_OVF_I1_UN-CEE_CONV_OVF_I1_UN, 0, 0, OP_RCONV_TO_OVF_I1_UN-CEE_CONV_OVF_I1_UN
 914 };
 915
 916 /* handles from CEE_CONV_OVF_I1 to CEE_CONV_OVF_U8 */
 917 static const guint16
 918 ovf3ops_op_map [STACK_MAX] = {
 919         0, OP_ICONV_TO_OVF_I1-CEE_CONV_OVF_I1, OP_LCONV_TO_OVF_I1-CEE_CONV_OVF_I1, OP_PCONV_TO_OVF_I1-CEE_CONV_OVF_I1, OP_FCONV_TO_OVF_I1-CEE_CONV_OVF_I1, OP_PCONV_TO_OVF_I1-CEE_CONV_OVF_I1, 0, 0, OP_RCONV_TO_OVF_I1-CEE_CONV_OVF_I1
 920 };
 921
 922 /* handles from CEE_BEQ to CEE_BLT_UN */
 923 static const guint16
 924 beqops_op_map [STACK_MAX] = {
 925         0, OP_IBEQ-CEE_BEQ, OP_LBEQ-CEE_BEQ, OP_PBEQ-CEE_BEQ, OP_FBEQ-CEE_BEQ, OP_PBEQ-CEE_BEQ, OP_PBEQ-CEE_BEQ, 0, OP_FBEQ-CEE_BEQ
 926 };
 927
 928 /* handles from CEE_CEQ to CEE_CLT_UN */
 929 static const guint16
 930 ceqops_op_map [STACK_MAX] = {
 931         0, OP_ICEQ-OP_CEQ, OP_LCEQ-OP_CEQ, OP_PCEQ-OP_CEQ, OP_FCEQ-OP_CEQ, OP_PCEQ-OP_CEQ, OP_PCEQ-OP_CEQ, 0, OP_RCEQ-OP_CEQ
 932 };
 933
 934 /*
 935  * Sets ins->type (the type on the eval stack) according to the
 936  * type of the opcode and the arguments to it.
 937  * Invalid IL code is marked by setting ins->type to the invalid value STACK_INV.
 938  *
 939  * FIXME: this function sets ins->type unconditionally in some cases, but
 940  * it should set it to invalid for some types (a conv.x on an object)
 941  */
 942 static void
 943 type_from_op (MonoCompile *cfg, MonoInst *ins, MonoInst *src1, MonoInst *src2)
 944 {
 945         switch (ins->opcode) {
 946         /* binops */
 947         case CEE_ADD:
 948         case CEE_SUB:
 949         case CEE_MUL:
 950         case CEE_DIV:
 951         case CEE_REM:
 952                 /* FIXME: check unverifiable args for STACK_MP */
 953                 ins->type = bin_num_table [src1->type] [src2->type];
 954                 ins->opcode += binops_op_map [ins->type];
 955                 break;
 956         case CEE_DIV_UN:
 957         case CEE_REM_UN:
 958         case CEE_AND:
 959         case CEE_OR:
 960         case CEE_XOR:
 961                 ins->type = bin_int_table [src1->type] [src2->type];
 962                 ins->opcode += binops_op_map [ins->type];
 963                 break;
 964         case CEE_SHL:
 965         case CEE_SHR:
 966         case CEE_SHR_UN:
 967                 ins->type = shift_table [src1->type] [src2->type];
 968                 ins->opcode += binops_op_map [ins->type];
 969                 break;
 970         case OP_COMPARE:
 971         case OP_LCOMPARE:
 972         case OP_ICOMPARE:
 973                 ins->type = bin_comp_table [src1->type] [src2->type] ? STACK_I4: STACK_INV;
 974                 if ((src1->type == STACK_I8) || ((SIZEOF_VOID_P == 8) && ((src1->type == STACK_PTR) || (src1->type == STACK_OBJ) || (src1->type == STACK_MP))))
 975                         ins->opcode = OP_LCOMPARE;
 976                 else if (src1->type == STACK_R4)
 977                         ins->opcode = OP_RCOMPARE;
 978                 else if (src1->type == STACK_R8)
 979                         ins->opcode = OP_FCOMPARE;
 980                 else
 981                         ins->opcode = OP_ICOMPARE;
 982                 break;
 983         case OP_ICOMPARE_IMM:
 984                 ins->type = bin_comp_table [src1->type] [src1->type] ? STACK_I4 : STACK_INV;
 985                 if ((src1->type == STACK_I8) || ((SIZEOF_VOID_P == 8) && ((src1->type == STACK_PTR) || (src1->type == STACK_OBJ) || (src1->type == STACK_MP))))
 986                         ins->opcode = OP_LCOMPARE_IMM;
 987                 break;
 988         case CEE_BEQ:
 989         case CEE_BGE:
 990         case CEE_BGT:
 991         case CEE_BLE:
 992         case CEE_BLT:
 993         case CEE_BNE_UN:
 994         case CEE_BGE_UN:
 995         case CEE_BGT_UN:
 996         case CEE_BLE_UN:
 997         case CEE_BLT_UN:
 998                 ins->opcode += beqops_op_map [src1->type];
 999                 break;
1000         case OP_CEQ:
1001                 ins->type = bin_comp_table [src1->type] [src2->type] ? STACK_I4: STACK_INV;
1002                 ins->opcode += ceqops_op_map [src1->type];
1003                 break;
1004         case OP_CGT:
1005         case OP_CGT_UN:
1006         case OP_CLT:
1007         case OP_CLT_UN:
1008                 ins->type = (bin_comp_table [src1->type] [src2->type] & 1) ? STACK_I4: STACK_INV;
1009                 ins->opcode += ceqops_op_map [src1->type];
1010                 break;
1011         /* unops */
1012         case CEE_NEG:
1013                 ins->type = neg_table [src1->type];
1014                 ins->opcode += unops_op_map [ins->type];
1015                 break;
1016         case CEE_NOT:
1017                 if (src1->type >= STACK_I4 && src1->type <= STACK_PTR)
1018                         ins->type = src1->type;
1019                 else
1020                         ins->type = STACK_INV;
1021                 ins->opcode += unops_op_map [ins->type];
1022                 break;
1023         case CEE_CONV_I1:
1024         case CEE_CONV_I2:
1025         case CEE_CONV_I4:
1026         case CEE_CONV_U4:
1027                 ins->type = STACK_I4;
1028                 ins->opcode += unops_op_map [src1->type];
1029                 break;
1030         case CEE_CONV_R_UN:
1031                 ins->type = STACK_R8;
1032                 switch (src1->type) {
1033                 case STACK_I4:
1034                 case STACK_PTR:
1035                         ins->opcode = OP_ICONV_TO_R_UN;
1036                         break;
1037                 case STACK_I8:
1038                         ins->opcode = OP_LCONV_TO_R_UN;
1039                         break;
1040                 }
1041                 break;
1042         case CEE_CONV_OVF_I1:
1043         case CEE_CONV_OVF_U1:
1044         case CEE_CONV_OVF_I2:
1045         case CEE_CONV_OVF_U2:
1046         case CEE_CONV_OVF_I4:
1047         case CEE_CONV_OVF_U4:
1048                 ins->type = STACK_I4;
1049                 ins->opcode += ovf3ops_op_map [src1->type];
1050                 break;
1051         case CEE_CONV_OVF_I_UN:
1052         case CEE_CONV_OVF_U_UN:
1053                 ins->type = STACK_PTR;
1054                 ins->opcode += ovf2ops_op_map [src1->type];
1055                 break;
1056         case CEE_CONV_OVF_I1_UN:
1057         case CEE_CONV_OVF_I2_UN:
1058         case CEE_CONV_OVF_I4_UN:
1059         case CEE_CONV_OVF_U1_UN:
1060         case CEE_CONV_OVF_U2_UN:
1061         case CEE_CONV_OVF_U4_UN:
1062                 ins->type = STACK_I4;
1063                 ins->opcode += ovf2ops_op_map [src1->type];
1064                 break;
1065         case CEE_CONV_U:
1066                 ins->type = STACK_PTR;
1067                 switch (src1->type) {
1068                 case STACK_I4:
1069                         ins->opcode = OP_ICONV_TO_U;
1070                         break;
1071                 case STACK_PTR:
1072                 case STACK_MP:
1073 #if SIZEOF_VOID_P == 8
1074                         ins->opcode = OP_LCONV_TO_U;
1075 #else
1076                         ins->opcode = OP_MOVE;
1077 #endif
1078                         break;
1079                 case STACK_I8:
1080                         ins->opcode = OP_LCONV_TO_U;
1081                         break;
1082                 case STACK_R8:
1083                         ins->opcode = OP_FCONV_TO_U;
1084                         break;
1085                 }
1086                 break;
1087         case CEE_CONV_I8:
1088         case CEE_CONV_U8:
1089                 ins->type = STACK_I8;
1090                 ins->opcode += unops_op_map [src1->type];
1091                 break;
1092         case CEE_CONV_OVF_I8:
1093         case CEE_CONV_OVF_U8:
1094                 ins->type = STACK_I8;
1095                 ins->opcode += ovf3ops_op_map [src1->type];
1096                 break;
1097         case CEE_CONV_OVF_U8_UN:
1098         case CEE_CONV_OVF_I8_UN:
1099                 ins->type = STACK_I8;
1100                 ins->opcode += ovf2ops_op_map [src1->type];
1101                 break;
1102         case CEE_CONV_R4:
1103                 ins->type = cfg->r4_stack_type;
1104                 ins->opcode += unops_op_map [src1->type];
1105                 break;
1106         case CEE_CONV_R8:
1107                 ins->type = STACK_R8;
1108                 ins->opcode += unops_op_map [src1->type];
1109                 break;
1110         case OP_CKFINITE:
1111                 ins->type = STACK_R8;
1112                 break;
1113         case CEE_CONV_U2:
1114         case CEE_CONV_U1:
1115                 ins->type = STACK_I4;
1116                 ins->opcode += ovfops_op_map [src1->type];
1117                 break;
1118         case CEE_CONV_I:
1119         case CEE_CONV_OVF_I:
1120         case CEE_CONV_OVF_U:
1121                 ins->type = STACK_PTR;
1122                 ins->opcode += ovfops_op_map [src1->type];
1123                 break;
1124         case CEE_ADD_OVF:
1125         case CEE_ADD_OVF_UN:
1126         case CEE_MUL_OVF:
1127         case CEE_MUL_OVF_UN:
1128         case CEE_SUB_OVF:
1129         case CEE_SUB_OVF_UN:
1130                 ins->type = bin_num_table [src1->type] [src2->type];
1131                 ins->opcode += ovfops_op_map [src1->type];
1132                 if (ins->type == STACK_R8)
1133                         ins->type = STACK_INV;
1134                 break;
1135         case OP_LOAD_MEMBASE:
1136                 ins->type = STACK_PTR;
1137                 break;
1138         case OP_LOADI1_MEMBASE:
1139         case OP_LOADU1_MEMBASE:
1140         case OP_LOADI2_MEMBASE:
1141         case OP_LOADU2_MEMBASE:
1142         case OP_LOADI4_MEMBASE:
1143         case OP_LOADU4_MEMBASE:
1144                 ins->type = STACK_PTR;
1145                 break;
1146         case OP_LOADI8_MEMBASE:
1147                 ins->type = STACK_I8;
1148                 break;
1149         case OP_LOADR4_MEMBASE:
1150                 ins->type = cfg->r4_stack_type;
1151                 break;
1152         case OP_LOADR8_MEMBASE:
1153                 ins->type = STACK_R8;
1154                 break;
1155         default:
1156                 g_error ("opcode 0x%04x not handled in type from op", ins->opcode);
1157                 break;
1158         }
1159
1160         if (ins->type == STACK_MP)
1161                 ins->klass = mono_defaults.object_class;
1162 }
1163
1164 static MonoClass*
1165 ldind_to_type (int op)
1166 {
1167         switch (op) {
1168         case CEE_LDIND_I1: return mono_defaults.sbyte_class;
1169         case CEE_LDIND_U1: return mono_defaults.byte_class;
1170         case CEE_LDIND_I2: return mono_defaults.int16_class;
1171         case CEE_LDIND_U2: return mono_defaults.uint16_class;
1172         case CEE_LDIND_I4: return mono_defaults.int32_class;
1173         case CEE_LDIND_U4: return mono_defaults.uint32_class;
1174         case CEE_LDIND_I8: return mono_defaults.int64_class;
1175         case CEE_LDIND_I: return mono_defaults.int_class;
1176         case CEE_LDIND_R4: return mono_defaults.single_class;
1177         case CEE_LDIND_R8: return mono_defaults.double_class;
1178         case CEE_LDIND_REF:return mono_defaults.object_class; //FIXME we should try to return a more specific type
1179         default: g_error ("Unknown ldind type %d", op);
1180         }
1181 }
1182
1183 #if 0
1184
1185 static const char
1186 param_table [STACK_MAX] [STACK_MAX] = {
1187         {0},
1188 };
1189
1190 static int
1191 check_values_to_signature (MonoInst *args, MonoType *this_ins, MonoMethodSignature *sig)
1192 {
1193         int i;
1194
1195         if (sig->hasthis) {
1196                 switch (args->type) {
1197                 case STACK_I4:
1198                 case STACK_I8:
1199                 case STACK_R8:
1200                 case STACK_VTYPE:
1201                 case STACK_INV:
1202                         return 0;
1203                 }
1204                 args++;
1205         }
1206         for (i = 0; i < sig->param_count; ++i) {
1207                 switch (args [i].type) {
1208                 case STACK_INV:
1209                         return 0;
1210                 case STACK_MP:
1211                         if (!sig->params [i]->byref)
1212                                 return 0;
1213                         continue;
1214                 case STACK_OBJ:
1215                         if (sig->params [i]->byref)
1216                                 return 0;
1217                         switch (sig->params [i]->type) {
1218                         case MONO_TYPE_CLASS:
1219                         case MONO_TYPE_STRING:
1220                         case MONO_TYPE_OBJECT:
1221                         case MONO_TYPE_SZARRAY:
1222                         case MONO_TYPE_ARRAY:
1223                                 break;
1224                         default:
1225                                 return 0;
1226                         }
1227                         continue;
1228                 case STACK_R8:
1229                         if (sig->params [i]->byref)
1230                                 return 0;
1231                         if (sig->params [i]->type != MONO_TYPE_R4 && sig->params [i]->type != MONO_TYPE_R8)
1232                                 return 0;
1233                         continue;
1234                 case STACK_PTR:
1235                 case STACK_I4:
1236                 case STACK_I8:
1237                 case STACK_VTYPE:
1238                         break;
1239                 }
1240                 /*if (!param_table [args [i].type] [sig->params [i]->type])
1241                         return 0;*/
1242         }
1243         return 1;
1244 }
1245 #endif
1246
1247 /*
1248  * When we need a pointer to the current domain many times in a method, we
1249  * call mono_domain_get() once and we store the result in a local variable.
1250  * This function returns the variable that represents the MonoDomain*.
1251  */
1252 inline static MonoInst *
1253 mono_get_domainvar (MonoCompile *cfg)
1254 {
1255         if (!cfg->domainvar)
1256                 cfg->domainvar = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
1257         return cfg->domainvar;
1258 }
1259
1260 /*
1261  * The got_var contains the address of the Global Offset Table when AOT
1262  * compiling.
1263  */
1264 MonoInst *
1265 mono_get_got_var (MonoCompile *cfg)
1266 {
1267         if (!cfg->compile_aot || !cfg->backend->need_got_var || cfg->llvm_only)
1268                 return NULL;
1269         if (!cfg->got_var) {
1270                 cfg->got_var = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
1271         }
1272         return cfg->got_var;
1273 }
1274
1275 static void
1276 mono_create_rgctx_var (MonoCompile *cfg)
1277 {
1278         if (!cfg->rgctx_var) {
1279                 cfg->rgctx_var = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
1280                 /* force the var to be stack allocated */
1281                 cfg->rgctx_var->flags |= MONO_INST_VOLATILE;
1282         }
1283 }
1284
1285 static MonoInst *
1286 mono_get_vtable_var (MonoCompile *cfg)
1287 {
1288         g_assert (cfg->gshared);
1289
1290         mono_create_rgctx_var (cfg);
1291
1292         return cfg->rgctx_var;
1293 }
1294
1295 static MonoType*
1296 type_from_stack_type (MonoInst *ins) {
1297         switch (ins->type) {
1298         case STACK_I4: return &mono_defaults.int32_class->byval_arg;
1299         case STACK_I8: return &mono_defaults.int64_class->byval_arg;
1300         case STACK_PTR: return &mono_defaults.int_class->byval_arg;
1301         case STACK_R4: return &mono_defaults.single_class->byval_arg;
1302         case STACK_R8: return &mono_defaults.double_class->byval_arg;
1303         case STACK_MP:
1304                 return &ins->klass->this_arg;
1305         case STACK_OBJ: return &mono_defaults.object_class->byval_arg;
1306         case STACK_VTYPE: return &ins->klass->byval_arg;
1307         default:
1308                 g_error ("stack type %d to monotype not handled\n", ins->type);
1309         }
1310         return NULL;
1311 }
1312
1313 static G_GNUC_UNUSED int
1314 type_to_stack_type (MonoCompile *cfg, MonoType *t)
1315 {
1316         t = mono_type_get_underlying_type (t);
1317         switch (t->type) {
1318         case MONO_TYPE_I1:
1319         case MONO_TYPE_U1:
1320         case MONO_TYPE_I2:
1321         case MONO_TYPE_U2:
1322         case MONO_TYPE_I4:
1323         case MONO_TYPE_U4:
1324                 return STACK_I4;
1325         case MONO_TYPE_I:
1326         case MONO_TYPE_U:
1327         case MONO_TYPE_PTR:
1328         case MONO_TYPE_FNPTR:
1329                 return STACK_PTR;
1330         case MONO_TYPE_CLASS:
1331         case MONO_TYPE_STRING:
1332         case MONO_TYPE_OBJECT:
1333         case MONO_TYPE_SZARRAY:
1334         case MONO_TYPE_ARRAY:
1335                 return STACK_OBJ;
1336         case MONO_TYPE_I8:
1337         case MONO_TYPE_U8:
1338                 return STACK_I8;
1339         case MONO_TYPE_R4:
1340                 return cfg->r4_stack_type;
1341         case MONO_TYPE_R8:
1342                 return STACK_R8;
1343         case MONO_TYPE_VALUETYPE:
1344         case MONO_TYPE_TYPEDBYREF:
1345                 return STACK_VTYPE;
1346         case MONO_TYPE_GENERICINST:
1347                 if (mono_type_generic_inst_is_valuetype (t))
1348                         return STACK_VTYPE;
1349                 else
1350                         return STACK_OBJ;
1351                 break;
1352         default:
1353                 g_assert_not_reached ();
1354         }
1355
1356         return -1;
1357 }
1358
1359 static MonoClass*
1360 array_access_to_klass (int opcode)
1361 {
1362         switch (opcode) {
1363         case CEE_LDELEM_U1:
1364                 return mono_defaults.byte_class;
1365         case CEE_LDELEM_U2:
1366                 return mono_defaults.uint16_class;
1367         case CEE_LDELEM_I:
1368         case CEE_STELEM_I:
1369                 return mono_defaults.int_class;
1370         case CEE_LDELEM_I1:
1371         case CEE_STELEM_I1:
1372                 return mono_defaults.sbyte_class;
1373         case CEE_LDELEM_I2:
1374         case CEE_STELEM_I2:
1375                 return mono_defaults.int16_class;
1376         case CEE_LDELEM_I4:
1377         case CEE_STELEM_I4:
1378                 return mono_defaults.int32_class;
1379         case CEE_LDELEM_U4:
1380                 return mono_defaults.uint32_class;
1381         case CEE_LDELEM_I8:
1382         case CEE_STELEM_I8:
1383                 return mono_defaults.int64_class;
1384         case CEE_LDELEM_R4:
1385         case CEE_STELEM_R4:
1386                 return mono_defaults.single_class;
1387         case CEE_LDELEM_R8:
1388         case CEE_STELEM_R8:
1389                 return mono_defaults.double_class;
1390         case CEE_LDELEM_REF:
1391         case CEE_STELEM_REF:
1392                 return mono_defaults.object_class;
1393         default:
1394                 g_assert_not_reached ();
1395         }
1396         return NULL;
1397 }
1398
1399 /*
1400  * We try to share variables when possible
1401  */
1402 static MonoInst *
1403 mono_compile_get_interface_var (MonoCompile *cfg, int slot, MonoInst *ins)
1404 {
1405         MonoInst *res;
1406         int pos, vnum;
1407
1408         /* inlining can result in deeper stacks */
1409         if (slot >= cfg->header->max_stack)
1410                 return mono_compile_create_var (cfg, type_from_stack_type (ins), OP_LOCAL);
1411
1412         pos = ins->type - 1 + slot * STACK_MAX;
1413
1414         switch (ins->type) {
1415         case STACK_I4:
1416         case STACK_I8:
1417         case STACK_R8:
1418         case STACK_PTR:
1419         case STACK_MP:
1420         case STACK_OBJ:
1421                 if ((vnum = cfg->intvars [pos]))
1422                         return cfg->varinfo [vnum];
1423                 res = mono_compile_create_var (cfg, type_from_stack_type (ins), OP_LOCAL);
1424                 cfg->intvars [pos] = res->inst_c0;
1425                 break;
1426         default:
1427                 res = mono_compile_create_var (cfg, type_from_stack_type (ins), OP_LOCAL);
1428         }
1429         return res;
1430 }
1431
1432 static void
1433 mono_save_token_info (MonoCompile *cfg, MonoImage *image, guint32 token, gpointer key)
1434 {
1435         /*
1436          * Don't use this if a generic_context is set, since that means AOT can't
1437          * look up the method using just the image+token.
1438          * table == 0 means this is a reference made from a wrapper.
1439          */
1440         if (cfg->compile_aot && !cfg->generic_context && (mono_metadata_token_table (token) > 0)) {
1441                 MonoJumpInfoToken *jump_info_token = (MonoJumpInfoToken *)mono_mempool_alloc0 (cfg->mempool, sizeof (MonoJumpInfoToken));
1442                 jump_info_token->image = image;
1443                 jump_info_token->token = token;
1444                 g_hash_table_insert (cfg->token_info_hash, key, jump_info_token);
1445         }
1446 }
1447
1448 /*
1449  * This function is called to handle items that are left on the evaluation stack
1450  * at basic block boundaries. What happens is that we save the values to local variables
1451  * and we reload them later when first entering the target basic block (with the
1452  * handle_loaded_temps () function).
1453  * A single joint point will use the same variables (stored in the array bb->out_stack or
1454  * bb->in_stack, if the basic block is before or after the joint point).
1455  *
1456  * This function needs to be called _before_ emitting the last instruction of
1457  * the bb (i.e. before emitting a branch).
1458  * If the stack merge fails at a join point, cfg->unverifiable is set.
1459  */
1460 static void
1461 handle_stack_args (MonoCompile *cfg, MonoInst **sp, int count)
1462 {
1463         int i, bindex;
1464         MonoBasicBlock *bb = cfg->cbb;
1465         MonoBasicBlock *outb;
1466         MonoInst *inst, **locals;
1467         gboolean found;
1468
1469         if (!count)
1470                 return;
1471         if (cfg->verbose_level > 3)
1472                 printf ("%d item(s) on exit from B%d\n", count, bb->block_num);
1473         if (!bb->out_scount) {
1474                 bb->out_scount = count;
1475                 //printf ("bblock %d has out:", bb->block_num);
1476                 found = FALSE;
1477                 for (i = 0; i < bb->out_count; ++i) {
1478                         outb = bb->out_bb [i];
1479                         /* exception handlers are linked, but they should not be considered for stack args */
1480                         if (outb->flags & BB_EXCEPTION_HANDLER)
1481                                 continue;
1482                         //printf (" %d", outb->block_num);
1483                         if (outb->in_stack) {
1484                                 found = TRUE;
1485                                 bb->out_stack = outb->in_stack;
1486                                 break;
1487                         }
1488                 }
1489                 //printf ("\n");
1490                 if (!found) {
1491                         bb->out_stack = (MonoInst **)mono_mempool_alloc (cfg->mempool, sizeof (MonoInst*) * count);
1492                         for (i = 0; i < count; ++i) {
1493                                 /*
1494                                  * try to reuse temps already allocated for this purpouse, if they occupy the same
1495                                  * stack slot and if they are of the same type.
1496                                  * This won't cause conflicts since if 'local' is used to
1497                                  * store one of the values in the in_stack of a bblock, then
1498                                  * the same variable will be used for the same outgoing stack
1499                                  * slot as well.
1500                                  * This doesn't work when inlining methods, since the bblocks
1501                                  * in the inlined methods do not inherit their in_stack from
1502                                  * the bblock they are inlined to. See bug #58863 for an
1503                                  * example.
1504                                  */
1505                                 if (cfg->inlined_method)
1506                                         bb->out_stack [i] = mono_compile_create_var (cfg, type_from_stack_type (sp [i]), OP_LOCAL);
1507                                 else
1508                                         bb->out_stack [i] = mono_compile_get_interface_var (cfg, i, sp [i]);
1509                         }
1510                 }
1511         }
1512
1513         for (i = 0; i < bb->out_count; ++i) {
1514                 outb = bb->out_bb [i];
1515                 /* exception handlers are linked, but they should not be considered for stack args */
1516                 if (outb->flags & BB_EXCEPTION_HANDLER)
1517                         continue;
1518                 if (outb->in_scount) {
1519                         if (outb->in_scount != bb->out_scount) {
1520                                 cfg->unverifiable = TRUE;
1521                                 return;
1522                         }
1523                         continue; /* check they are the same locals */
1524                 }
1525                 outb->in_scount = count;
1526                 outb->in_stack = bb->out_stack;
1527         }
1528
1529         locals = bb->out_stack;
1530         cfg->cbb = bb;
1531         for (i = 0; i < count; ++i) {
1532                 EMIT_NEW_TEMPSTORE (cfg, inst, locals [i]->inst_c0, sp [i]);
1533                 inst->cil_code = sp [i]->cil_code;
1534                 sp [i] = locals [i];
1535                 if (cfg->verbose_level > 3)
1536                         printf ("storing %d to temp %d\n", i, (int)locals [i]->inst_c0);
1537         }
1538
1539         /*
1540          * It is possible that the out bblocks already have in_stack assigned, and
1541          * the in_stacks differ. In this case, we will store to all the different
1542          * in_stacks.
1543          */
1544
1545         found = TRUE;
1546         bindex = 0;
1547         while (found) {
1548                 /* Find a bblock which has a different in_stack */
1549                 found = FALSE;
1550                 while (bindex < bb->out_count) {
1551                         outb = bb->out_bb [bindex];
1552                         /* exception handlers are linked, but they should not be considered for stack args */
1553                         if (outb->flags & BB_EXCEPTION_HANDLER) {
1554                                 bindex++;
1555                                 continue;
1556                         }
1557                         if (outb->in_stack != locals) {
1558                                 for (i = 0; i < count; ++i) {
1559                                         EMIT_NEW_TEMPSTORE (cfg, inst, outb->in_stack [i]->inst_c0, sp [i]);
1560                                         inst->cil_code = sp [i]->cil_code;
1561                                         sp [i] = locals [i];
1562                                         if (cfg->verbose_level > 3)
1563                                                 printf ("storing %d to temp %d\n", i, (int)outb->in_stack [i]->inst_c0);
1564                                 }
1565                                 locals = outb->in_stack;
1566                                 found = TRUE;
1567                                 break;
1568                         }
1569                         bindex ++;
1570                 }
1571         }
1572 }
1573
1574 MonoInst*
1575 mini_emit_runtime_constant (MonoCompile *cfg, MonoJumpInfoType patch_type, gpointer data)
1576 {
1577         MonoInst *ins;
1578
1579         if (cfg->compile_aot) {
1580                 EMIT_NEW_AOTCONST (cfg, ins, patch_type, data);
1581         } else {
1582                 MonoJumpInfo ji;
1583                 gpointer target;
1584                 MonoError error;
1585
1586                 ji.type = patch_type;
1587                 ji.data.target = data;
1588                 target = mono_resolve_patch_target (NULL, cfg->domain, NULL, &ji, FALSE, &error);
1589                 mono_error_assert_ok (&error);
1590
1591                 EMIT_NEW_PCONST (cfg, ins, target);
1592         }
1593         return ins;
1594 }
1595
1596 static MonoInst*
1597 mono_create_fast_tls_getter (MonoCompile *cfg, MonoTlsKey key)
1598 {
1599         int tls_offset = mono_tls_get_tls_offset (key);
1600
1601         if (cfg->compile_aot)
1602                 return NULL;
1603
1604         if (tls_offset != -1 && mono_arch_have_fast_tls ()) {
1605                 MonoInst *ins;
1606                 MONO_INST_NEW (cfg, ins, OP_TLS_GET);
1607                 ins->dreg = mono_alloc_preg (cfg);
1608                 ins->inst_offset = tls_offset;
1609                 return ins;
1610         }
1611         return NULL;
1612 }
1613
1614 static MonoInst*
1615 mono_create_fast_tls_setter (MonoCompile *cfg, MonoInst* value, MonoTlsKey key)
1616 {
1617         int tls_offset = mono_tls_get_tls_offset (key);
1618
1619         if (cfg->compile_aot)
1620                 return NULL;
1621
1622         if (tls_offset != -1 && mono_arch_have_fast_tls ()) {
1623                 MonoInst *ins;
1624                 MONO_INST_NEW (cfg, ins, OP_TLS_SET);
1625                 ins->sreg1 = value->dreg;
1626                 ins->inst_offset = tls_offset;
1627                 return ins;
1628         }
1629         return NULL;
1630 }
1631
1632
1633 MonoInst*
1634 mono_create_tls_get (MonoCompile *cfg, MonoTlsKey key)
1635 {
1636         MonoInst *fast_tls = NULL;
1637
1638         if (!mini_get_debug_options ()->use_fallback_tls)
1639                 fast_tls = mono_create_fast_tls_getter (cfg, key);
1640
1641         if (fast_tls) {
1642                 MONO_ADD_INS (cfg->cbb, fast_tls);
1643                 return fast_tls;
1644         }
1645
1646         if (cfg->compile_aot) {
1647                 MonoInst *addr;
1648                 /*
1649                  * tls getters are critical pieces of code and we don't want to resolve them
1650                  * through the standard plt/tramp mechanism since we might expose ourselves
1651                  * to crashes and infinite recursions.
1652                  */
1653                 EMIT_NEW_AOTCONST (cfg, addr, MONO_PATCH_INFO_GET_TLS_TRAMP, (void*)key);
1654                 return mini_emit_calli (cfg, helper_sig_get_tls_tramp, NULL, addr, NULL, NULL);
1655         } else {
1656                 gpointer getter = mono_tls_get_tls_getter (key, FALSE);
1657                 return mono_emit_jit_icall (cfg, getter, NULL);
1658         }
1659 }
1660
1661 static MonoInst*
1662 mono_create_tls_set (MonoCompile *cfg, MonoInst *value, MonoTlsKey key)
1663 {
1664         MonoInst *fast_tls = NULL;
1665
1666         if (!mini_get_debug_options ()->use_fallback_tls)
1667                 fast_tls = mono_create_fast_tls_setter (cfg, value, key);
1668
1669         if (fast_tls) {
1670                 MONO_ADD_INS (cfg->cbb, fast_tls);
1671                 return fast_tls;
1672         }
1673
1674         if (cfg->compile_aot) {
1675                 MonoInst *addr;
1676                 EMIT_NEW_AOTCONST (cfg, addr, MONO_PATCH_INFO_SET_TLS_TRAMP, (void*)key);
1677                 return mini_emit_calli (cfg, helper_sig_set_tls_tramp, &value, addr, NULL, NULL);
1678         } else {
1679                 gpointer setter = mono_tls_get_tls_setter (key, FALSE);
1680                 return mono_emit_jit_icall (cfg, setter, &value);
1681         }
1682 }
1683
1684 /*
1685  * emit_push_lmf:
1686  *
1687  *   Emit IR to push the current LMF onto the LMF stack.
1688  */
1689 static void
1690 emit_push_lmf (MonoCompile *cfg)
1691 {
1692         /*
1693          * Emit IR to push the LMF:
1694          * lmf_addr = <lmf_addr from tls>
1695          * lmf->lmf_addr = lmf_addr
1696          * lmf->prev_lmf = *lmf_addr
1697          * *lmf_addr = lmf
1698          */
1699         MonoInst *ins, *lmf_ins;
1700
1701         if (!cfg->lmf_ir)
1702                 return;
1703
1704         int lmf_reg, prev_lmf_reg;
1705         /*
1706          * Store lmf_addr in a variable, so it can be allocated to a global register.
1707          */
1708         if (!cfg->lmf_addr_var)
1709                 cfg->lmf_addr_var = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
1710
1711 #ifdef HOST_WIN32
1712         ins = mono_create_tls_get (cfg, TLS_KEY_JIT_TLS);
1713         g_assert (ins);
1714         int jit_tls_dreg = ins->dreg;
1715
1716         lmf_reg = alloc_preg (cfg);
1717         EMIT_NEW_BIALU_IMM (cfg, lmf_ins, OP_PADD_IMM, lmf_reg, jit_tls_dreg, MONO_STRUCT_OFFSET (MonoJitTlsData, lmf));
1718 #else
1719         lmf_ins = mono_create_tls_get (cfg, TLS_KEY_LMF_ADDR);
1720         g_assert (lmf_ins);
1721 #endif
1722         lmf_ins->dreg = cfg->lmf_addr_var->dreg;
1723
1724         EMIT_NEW_VARLOADA (cfg, ins, cfg->lmf_var, NULL);
1725         lmf_reg = ins->dreg;
1726
1727         prev_lmf_reg = alloc_preg (cfg);
1728         /* Save previous_lmf */
1729         EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOAD_MEMBASE, prev_lmf_reg, cfg->lmf_addr_var->dreg, 0);
1730         EMIT_NEW_STORE_MEMBASE (cfg, ins, OP_STORE_MEMBASE_REG, lmf_reg, MONO_STRUCT_OFFSET (MonoLMF, previous_lmf), prev_lmf_reg);
1731         /* Set new lmf */
1732         EMIT_NEW_STORE_MEMBASE (cfg, ins, OP_STORE_MEMBASE_REG, cfg->lmf_addr_var->dreg, 0, lmf_reg);
1733 }
1734
1735 /*
1736  * emit_pop_lmf:
1737  *
1738  *   Emit IR to pop the current LMF from the LMF stack.
1739  */
1740 static void
1741 emit_pop_lmf (MonoCompile *cfg)
1742 {
1743         int lmf_reg, lmf_addr_reg;
1744         MonoInst *ins;
1745
1746         if (!cfg->lmf_ir)
1747                 return;
1748
1749         EMIT_NEW_VARLOADA (cfg, ins, cfg->lmf_var, NULL);
1750         lmf_reg = ins->dreg;
1751
1752         int prev_lmf_reg;
1753         /*
1754          * Emit IR to pop the LMF:
1755          * *(lmf->lmf_addr) = lmf->prev_lmf
1756          */
1757         /* This could be called before emit_push_lmf () */
1758         if (!cfg->lmf_addr_var)
1759                 cfg->lmf_addr_var = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
1760         lmf_addr_reg = cfg->lmf_addr_var->dreg;
1761
1762         prev_lmf_reg = alloc_preg (cfg);
1763         EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOAD_MEMBASE, prev_lmf_reg, lmf_reg, MONO_STRUCT_OFFSET (MonoLMF, previous_lmf));
1764         EMIT_NEW_STORE_MEMBASE (cfg, ins, OP_STORE_MEMBASE_REG, lmf_addr_reg, 0, prev_lmf_reg);
1765 }
1766
1767 static int
1768 ret_type_to_call_opcode (MonoCompile *cfg, MonoType *type, int calli, int virt)
1769 {
1770 handle_enum:
1771         type = mini_get_underlying_type (type);
1772         switch (type->type) {
1773         case MONO_TYPE_VOID:
1774                 return calli? OP_VOIDCALL_REG: virt? OP_VOIDCALL_MEMBASE: OP_VOIDCALL;
1775         case MONO_TYPE_I1:
1776         case MONO_TYPE_U1:
1777         case MONO_TYPE_I2:
1778         case MONO_TYPE_U2:
1779         case MONO_TYPE_I4:
1780         case MONO_TYPE_U4:
1781                 return calli? OP_CALL_REG: virt? OP_CALL_MEMBASE: OP_CALL;
1782         case MONO_TYPE_I:
1783         case MONO_TYPE_U:
1784         case MONO_TYPE_PTR:
1785         case MONO_TYPE_FNPTR:
1786                 return calli? OP_CALL_REG: virt? OP_CALL_MEMBASE: OP_CALL;
1787         case MONO_TYPE_CLASS:
1788         case MONO_TYPE_STRING:
1789         case MONO_TYPE_OBJECT:
1790         case MONO_TYPE_SZARRAY:
1791         case MONO_TYPE_ARRAY:
1792                 return calli? OP_CALL_REG: virt? OP_CALL_MEMBASE: OP_CALL;
1793         case MONO_TYPE_I8:
1794         case MONO_TYPE_U8:
1795                 return calli? OP_LCALL_REG: virt? OP_LCALL_MEMBASE: OP_LCALL;
1796         case MONO_TYPE_R4:
1797                 if (cfg->r4fp)
1798                         return calli? OP_RCALL_REG: virt? OP_RCALL_MEMBASE: OP_RCALL;
1799                 else
1800                         return calli? OP_FCALL_REG: virt? OP_FCALL_MEMBASE: OP_FCALL;
1801         case MONO_TYPE_R8:
1802                 return calli? OP_FCALL_REG: virt? OP_FCALL_MEMBASE: OP_FCALL;
1803         case MONO_TYPE_VALUETYPE:
1804                 if (type->data.klass->enumtype) {
1805                         type = mono_class_enum_basetype (type->data.klass);
1806                         goto handle_enum;
1807                 } else
1808                         return calli? OP_VCALL_REG: virt? OP_VCALL_MEMBASE: OP_VCALL;
1809         case MONO_TYPE_TYPEDBYREF:
1810                 return calli? OP_VCALL_REG: virt? OP_VCALL_MEMBASE: OP_VCALL;
1811         case MONO_TYPE_GENERICINST:
1812                 type = &type->data.generic_class->container_class->byval_arg;
1813                 goto handle_enum;
1814         case MONO_TYPE_VAR:
1815         case MONO_TYPE_MVAR:
1816                 /* gsharedvt */
1817                 return calli? OP_VCALL_REG: virt? OP_VCALL_MEMBASE: OP_VCALL;
1818         default:
1819                 g_error ("unknown type 0x%02x in ret_type_to_call_opcode", type->type);
1820         }
1821         return -1;
1822 }
1823
1824 //XXX this ignores if t is byref
1825 #define MONO_TYPE_IS_PRIMITIVE_SCALAR(t) ((((((t)->type >= MONO_TYPE_BOOLEAN && (t)->type <= MONO_TYPE_U8) || ((t)->type >= MONO_TYPE_I && (t)->type <= MONO_TYPE_U)))))
1826
1827 /*
1828  * target_type_is_incompatible:
1829  * @cfg: MonoCompile context
1830  *
1831  * Check that the item @arg on the evaluation stack can be stored
1832  * in the target type (can be a local, or field, etc).
1833  * The cfg arg can be used to check if we need verification or just
1834  * validity checks.
1835  *
1836  * Returns: non-0 value if arg can't be stored on a target.
1837  */
1838 static int
1839 target_type_is_incompatible (MonoCompile *cfg, MonoType *target, MonoInst *arg)
1840 {
1841         MonoType *simple_type;
1842         MonoClass *klass;
1843
1844         if (target->byref) {
1845                 /* FIXME: check that the pointed to types match */
1846                 if (arg->type == STACK_MP) {
1847                         /* This is needed to handle gshared types + ldaddr. We lower the types so we can handle enums and other typedef-like types. */
1848                         MonoClass *target_class_lowered = mono_class_from_mono_type (mini_get_underlying_type (&mono_class_from_mono_type (target)->byval_arg));
1849                         MonoClass *source_class_lowered = mono_class_from_mono_type (mini_get_underlying_type (&arg->klass->byval_arg));
1850
1851                         /* if the target is native int& or same type */
1852                         if (target->type == MONO_TYPE_I || target_class_lowered == source_class_lowered)
1853                                 return 0;
1854
1855                         /* Both are primitive type byrefs and the source points to a larger type that the destination */
1856                         if (MONO_TYPE_IS_PRIMITIVE_SCALAR (&target_class_lowered->byval_arg) && MONO_TYPE_IS_PRIMITIVE_SCALAR (&source_class_lowered->byval_arg) &&
1857                                 mono_class_instance_size (target_class_lowered) <= mono_class_instance_size (source_class_lowered))
1858                                 return 0;
1859                         return 1;
1860                 }
1861                 if (arg->type == STACK_PTR)
1862                         return 0;
1863                 return 1;
1864         }
1865
1866         simple_type = mini_get_underlying_type (target);
1867         switch (simple_type->type) {
1868         case MONO_TYPE_VOID:
1869                 return 1;
1870         case MONO_TYPE_I1:
1871         case MONO_TYPE_U1:
1872         case MONO_TYPE_I2:
1873         case MONO_TYPE_U2:
1874         case MONO_TYPE_I4:
1875         case MONO_TYPE_U4:
1876                 if (arg->type != STACK_I4 && arg->type != STACK_PTR)
1877                         return 1;
1878                 return 0;
1879         case MONO_TYPE_PTR:
1880                 /* STACK_MP is needed when setting pinned locals */
1881                 if (arg->type != STACK_I4 && arg->type != STACK_PTR && arg->type != STACK_MP)
1882                         return 1;
1883                 return 0;
1884         case MONO_TYPE_I:
1885         case MONO_TYPE_U:
1886         case MONO_TYPE_FNPTR:
1887                 /*
1888                  * Some opcodes like ldloca returns 'transient pointers' which can be stored in
1889                  * in native int. (#688008).
1890                  */
1891                 if (arg->type != STACK_I4 && arg->type != STACK_PTR && arg->type != STACK_MP)
1892                         return 1;
1893                 return 0;
1894         case MONO_TYPE_CLASS:
1895         case MONO_TYPE_STRING:
1896         case MONO_TYPE_OBJECT:
1897         case MONO_TYPE_SZARRAY:
1898         case MONO_TYPE_ARRAY:
1899                 if (arg->type != STACK_OBJ)
1900                         return 1;
1901                 /* FIXME: check type compatibility */
1902                 return 0;
1903         case MONO_TYPE_I8:
1904         case MONO_TYPE_U8:
1905                 if (arg->type != STACK_I8)
1906                         return 1;
1907                 return 0;
1908         case MONO_TYPE_R4:
1909                 if (arg->type != cfg->r4_stack_type)
1910                         return 1;
1911                 return 0;
1912         case MONO_TYPE_R8:
1913                 if (arg->type != STACK_R8)
1914                         return 1;
1915                 return 0;
1916         case MONO_TYPE_VALUETYPE:
1917                 if (arg->type != STACK_VTYPE)
1918                         return 1;
1919                 klass = mono_class_from_mono_type (simple_type);
1920                 if (klass != arg->klass)
1921                         return 1;
1922                 return 0;
1923         case MONO_TYPE_TYPEDBYREF:
1924                 if (arg->type != STACK_VTYPE)
1925                         return 1;
1926                 klass = mono_class_from_mono_type (simple_type);
1927                 if (klass != arg->klass)
1928                         return 1;
1929                 return 0;
1930         case MONO_TYPE_GENERICINST:
1931                 if (mono_type_generic_inst_is_valuetype (simple_type)) {
1932                         MonoClass *target_class;
1933                         if (arg->type != STACK_VTYPE)
1934                                 return 1;
1935                         klass = mono_class_from_mono_type (simple_type);
1936                         target_class = mono_class_from_mono_type (target);
1937                         /* The second cases is needed when doing partial sharing */
1938                         if (klass != arg->klass && target_class != arg->klass && target_class != mono_class_from_mono_type (mini_get_underlying_type (&arg->klass->byval_arg)))
1939                                 return 1;
1940                         return 0;
1941                 } else {
1942                         if (arg->type != STACK_OBJ)
1943                                 return 1;
1944                         /* FIXME: check type compatibility */
1945                         return 0;
1946                 }
1947         case MONO_TYPE_VAR:
1948         case MONO_TYPE_MVAR:
1949                 g_assert (cfg->gshared);
1950                 if (mini_type_var_is_vt (simple_type)) {
1951                         if (arg->type != STACK_VTYPE)
1952                                 return 1;
1953                 } else {
1954                         if (arg->type != STACK_OBJ)
1955                                 return 1;
1956                 }
1957                 return 0;
1958         default:
1959                 g_error ("unknown type 0x%02x in target_type_is_incompatible", simple_type->type);
1960         }
1961         return 1;
1962 }
1963
1964 /*
1965  * Prepare arguments for passing to a function call.
1966  * Return a non-zero value if the arguments can't be passed to the given
1967  * signature.
1968  * The type checks are not yet complete and some conversions may need
1969  * casts on 32 or 64 bit architectures.
1970  *
1971  * FIXME: implement this using target_type_is_incompatible ()
1972  */
1973 static int
1974 check_call_signature (MonoCompile *cfg, MonoMethodSignature *sig, MonoInst **args)
1975 {
1976         MonoType *simple_type;
1977         int i;
1978
1979         if (sig->hasthis) {
1980                 if (args [0]->type != STACK_OBJ && args [0]->type != STACK_MP && args [0]->type != STACK_PTR)
1981                         return 1;
1982                 args++;
1983         }
1984         for (i = 0; i < sig->param_count; ++i) {
1985                 if (sig->params [i]->byref) {
1986                         if (args [i]->type != STACK_MP && args [i]->type != STACK_PTR)
1987                                 return 1;
1988                         continue;
1989                 }
1990                 simple_type = mini_get_underlying_type (sig->params [i]);
1991 handle_enum:
1992                 switch (simple_type->type) {
1993                 case MONO_TYPE_VOID:
1994                         return 1;
1995                         continue;
1996                 case MONO_TYPE_I1:
1997                 case MONO_TYPE_U1:
1998                 case MONO_TYPE_I2:
1999                 case MONO_TYPE_U2:
2000                 case MONO_TYPE_I4:
2001                 case MONO_TYPE_U4:
2002                         if (args [i]->type != STACK_I4 && args [i]->type != STACK_PTR)
2003                                 return 1;
2004                         continue;
2005                 case MONO_TYPE_I:
2006                 case MONO_TYPE_U:
2007                 case MONO_TYPE_PTR:
2008                 case MONO_TYPE_FNPTR:
2009                         if (args [i]->type != STACK_I4 && args [i]->type != STACK_PTR && args [i]->type != STACK_MP && args [i]->type != STACK_OBJ)
2010                                 return 1;
2011                         continue;
2012                 case MONO_TYPE_CLASS:
2013                 case MONO_TYPE_STRING:
2014                 case MONO_TYPE_OBJECT:
2015                 case MONO_TYPE_SZARRAY:
2016                 case MONO_TYPE_ARRAY:
2017                         if (args [i]->type != STACK_OBJ)
2018                                 return 1;
2019                         continue;
2020                 case MONO_TYPE_I8:
2021                 case MONO_TYPE_U8:
2022                         if (args [i]->type != STACK_I8)
2023                                 return 1;
2024                         continue;
2025                 case MONO_TYPE_R4:
2026                         if (args [i]->type != cfg->r4_stack_type)
2027                                 return 1;
2028                         continue;
2029                 case MONO_TYPE_R8:
2030                         if (args [i]->type != STACK_R8)
2031                                 return 1;
2032                         continue;
2033                 case MONO_TYPE_VALUETYPE:
2034                         if (simple_type->data.klass->enumtype) {
2035                                 simple_type = mono_class_enum_basetype (simple_type->data.klass);
2036                                 goto handle_enum;
2037                         }
2038                         if (args [i]->type != STACK_VTYPE)
2039                                 return 1;
2040                         continue;
2041                 case MONO_TYPE_TYPEDBYREF:
2042                         if (args [i]->type != STACK_VTYPE)
2043                                 return 1;
2044                         continue;
2045                 case MONO_TYPE_GENERICINST:
2046                         simple_type = &simple_type->data.generic_class->container_class->byval_arg;
2047                         goto handle_enum;
2048                 case MONO_TYPE_VAR:
2049                 case MONO_TYPE_MVAR:
2050                         /* gsharedvt */
2051                         if (args [i]->type != STACK_VTYPE)
2052                                 return 1;
2053                         continue;
2054                 default:
2055                         g_error ("unknown type 0x%02x in check_call_signature",
2056                                  simple_type->type);
2057                 }
2058         }
2059         return 0;
2060 }
2061
2062 static int
2063 callvirt_to_call (int opcode)
2064 {
2065         switch (opcode) {
2066         case OP_CALL_MEMBASE:
2067                 return OP_CALL;
2068         case OP_VOIDCALL_MEMBASE:
2069                 return OP_VOIDCALL;
2070         case OP_FCALL_MEMBASE:
2071                 return OP_FCALL;
2072         case OP_RCALL_MEMBASE:
2073                 return OP_RCALL;
2074         case OP_VCALL_MEMBASE:
2075                 return OP_VCALL;
2076         case OP_LCALL_MEMBASE:
2077                 return OP_LCALL;
2078         default:
2079                 g_assert_not_reached ();
2080         }
2081
2082         return -1;
2083 }
2084
2085 static int
2086 callvirt_to_call_reg (int opcode)
2087 {
2088         switch (opcode) {
2089         case OP_CALL_MEMBASE:
2090                 return OP_CALL_REG;
2091         case OP_VOIDCALL_MEMBASE:
2092                 return OP_VOIDCALL_REG;
2093         case OP_FCALL_MEMBASE:
2094                 return OP_FCALL_REG;
2095         case OP_RCALL_MEMBASE:
2096                 return OP_RCALL_REG;
2097         case OP_VCALL_MEMBASE:
2098                 return OP_VCALL_REG;
2099         case OP_LCALL_MEMBASE:
2100                 return OP_LCALL_REG;
2101         default:
2102                 g_assert_not_reached ();
2103         }
2104
2105         return -1;
2106 }
2107
2108 /* Either METHOD or IMT_ARG needs to be set */
2109 static void
2110 emit_imt_argument (MonoCompile *cfg, MonoCallInst *call, MonoMethod *method, MonoInst *imt_arg)
2111 {
2112         int method_reg;
2113
2114         if (COMPILE_LLVM (cfg)) {
2115                 if (imt_arg) {
2116                         method_reg = alloc_preg (cfg);
2117                         MONO_EMIT_NEW_UNALU (cfg, OP_MOVE, method_reg, imt_arg->dreg);
2118                 } else {
2119                         MonoInst *ins = mini_emit_runtime_constant (cfg, MONO_PATCH_INFO_METHODCONST, method);
2120                         method_reg = ins->dreg;
2121                 }
2122
2123 #ifdef ENABLE_LLVM
2124                 call->imt_arg_reg = method_reg;
2125 #endif
2126                 mono_call_inst_add_outarg_reg (cfg, call, method_reg, MONO_ARCH_IMT_REG, FALSE);
2127                 return;
2128         }
2129
2130         if (imt_arg) {
2131                 method_reg = alloc_preg (cfg);
2132                 MONO_EMIT_NEW_UNALU (cfg, OP_MOVE, method_reg, imt_arg->dreg);
2133         } else {
2134                 MonoInst *ins = mini_emit_runtime_constant (cfg, MONO_PATCH_INFO_METHODCONST, method);
2135                 method_reg = ins->dreg;
2136         }
2137
2138         mono_call_inst_add_outarg_reg (cfg, call, method_reg, MONO_ARCH_IMT_REG, FALSE);
2139 }
2140
2141 static MonoJumpInfo *
2142 mono_patch_info_new (MonoMemPool *mp, int ip, MonoJumpInfoType type, gconstpointer target)
2143 {
2144         MonoJumpInfo *ji = (MonoJumpInfo *)mono_mempool_alloc (mp, sizeof (MonoJumpInfo));
2145
2146         ji->ip.i = ip;
2147         ji->type = type;
2148         ji->data.target = target;
2149
2150         return ji;
2151 }
2152
2153 int
2154 mini_class_check_context_used (MonoCompile *cfg, MonoClass *klass)
2155 {
2156         if (cfg->gshared)
2157                 return mono_class_check_context_used (klass);
2158         else
2159                 return 0;
2160 }
2161
2162 static int
2163 mini_method_check_context_used (MonoCompile *cfg, MonoMethod *method)
2164 {
2165         if (cfg->gshared)
2166                 return mono_method_check_context_used (method);
2167         else
2168                 return 0;
2169 }
2170
2171 /*
2172  * check_method_sharing:
2173  *
2174  *   Check whenever the vtable or an mrgctx needs to be passed when calling CMETHOD.
2175  */
2176 static void
2177 check_method_sharing (MonoCompile *cfg, MonoMethod *cmethod, gboolean *out_pass_vtable, gboolean *out_pass_mrgctx)
2178 {
2179         gboolean pass_vtable = FALSE;
2180         gboolean pass_mrgctx = FALSE;
2181
2182         if (((cmethod->flags & METHOD_ATTRIBUTE_STATIC) || cmethod->klass->valuetype) &&
2183                 (mono_class_is_ginst (cmethod->klass) || mono_class_is_gtd (cmethod->klass))) {
2184                 gboolean sharable = FALSE;
2185
2186                 if (mono_method_is_generic_sharable_full (cmethod, TRUE, TRUE, TRUE))
2187                         sharable = TRUE;
2188
2189                 /*
2190                  * Pass vtable iff target method might
2191                  * be shared, which means that sharing
2192                  * is enabled for its class and its
2193                  * context is sharable (and it's not a
2194                  * generic method).
2195                  */
2196                 if (sharable && !(mini_method_get_context (cmethod) && mini_method_get_context (cmethod)->method_inst))
2197                         pass_vtable = TRUE;
2198         }
2199
2200         if (mini_method_get_context (cmethod) &&
2201                 mini_method_get_context (cmethod)->method_inst) {
2202                 g_assert (!pass_vtable);
2203
2204                 if (mono_method_is_generic_sharable_full (cmethod, TRUE, TRUE, TRUE)) {
2205                         pass_mrgctx = TRUE;
2206                 } else {
2207                         if (cfg->gsharedvt && mini_is_gsharedvt_signature (mono_method_signature (cmethod)))
2208                                 pass_mrgctx = TRUE;
2209                 }
2210         }
2211
2212         if (out_pass_vtable)
2213                 *out_pass_vtable = pass_vtable;
2214         if (out_pass_mrgctx)
2215                 *out_pass_mrgctx = pass_mrgctx;
2216 }
2217
2218 inline static MonoCallInst *
2219 mono_emit_call_args (MonoCompile *cfg, MonoMethodSignature *sig,
2220                                          MonoInst **args, int calli, int virtual_, int tail, int rgctx, int unbox_trampoline, MonoMethod *target)
2221 {
2222         MonoType *sig_ret;
2223         MonoCallInst *call;
2224 #ifdef MONO_ARCH_SOFT_FLOAT_FALLBACK
2225         int i;
2226 #endif
2227
2228         if (cfg->llvm_only)
2229                 tail = FALSE;
2230
2231         if (tail) {
2232                 mini_profiler_emit_tail_call (cfg, target);
2233
2234                 MONO_INST_NEW_CALL (cfg, call, OP_TAILCALL);
2235         } else
2236                 MONO_INST_NEW_CALL (cfg, call, ret_type_to_call_opcode (cfg, sig->ret, calli, virtual_));
2237
2238         call->args = args;
2239         call->signature = sig;
2240         call->rgctx_reg = rgctx;
2241         sig_ret = mini_get_underlying_type (sig->ret);
2242
2243         type_to_eval_stack_type ((cfg), sig_ret, &call->inst);
2244
2245         if (tail) {
2246                 if (mini_type_is_vtype (sig_ret)) {
2247                         call->vret_var = cfg->vret_addr;
2248                         //g_assert_not_reached ();
2249                 }
2250         } else if (mini_type_is_vtype (sig_ret)) {
2251                 MonoInst *temp = mono_compile_create_var (cfg, sig_ret, OP_LOCAL);
2252                 MonoInst *loada;
2253
2254                 temp->backend.is_pinvoke = sig->pinvoke;
2255
2256                 /*
2257                  * We use a new opcode OP_OUTARG_VTRETADDR instead of LDADDR for emitting the
2258                  * address of return value to increase optimization opportunities.
2259                  * Before vtype decomposition, the dreg of the call ins itself represents the
2260                  * fact the call modifies the return value. After decomposition, the call will
2261                  * be transformed into one of the OP_VOIDCALL opcodes, and the VTRETADDR opcode
2262                  * will be transformed into an LDADDR.
2263                  */
2264                 MONO_INST_NEW (cfg, loada, OP_OUTARG_VTRETADDR);
2265                 loada->dreg = alloc_preg (cfg);
2266                 loada->inst_p0 = temp;
2267                 /* We reference the call too since call->dreg could change during optimization */
2268                 loada->inst_p1 = call;
2269                 MONO_ADD_INS (cfg->cbb, loada);
2270
2271                 call->inst.dreg = temp->dreg;
2272
2273                 call->vret_var = loada;
2274         } else if (!MONO_TYPE_IS_VOID (sig_ret))
2275                 call->inst.dreg = alloc_dreg (cfg, (MonoStackType)call->inst.type);
2276
2277 #ifdef MONO_ARCH_SOFT_FLOAT_FALLBACK
2278         if (COMPILE_SOFT_FLOAT (cfg)) {
2279                 /*
2280                  * If the call has a float argument, we would need to do an r8->r4 conversion using
2281                  * an icall, but that cannot be done during the call sequence since it would clobber
2282                  * the call registers + the stack. So we do it before emitting the call.
2283                  */
2284                 for (i = 0; i < sig->param_count + sig->hasthis; ++i) {
2285                         MonoType *t;
2286                         MonoInst *in = call->args [i];
2287
2288                         if (i >= sig->hasthis)
2289                                 t = sig->params [i - sig->hasthis];
2290                         else
2291                                 t = &mono_defaults.int_class->byval_arg;
2292                         t = mono_type_get_underlying_type (t);
2293
2294                         if (!t->byref && t->type == MONO_TYPE_R4) {
2295                                 MonoInst *iargs [1];
2296                                 MonoInst *conv;
2297
2298                                 iargs [0] = in;
2299                                 conv = mono_emit_jit_icall (cfg, mono_fload_r4_arg, iargs);
2300
2301                                 /* The result will be in an int vreg */
2302                                 call->args [i] = conv;
2303                         }
2304                 }
2305         }
2306 #endif
2307
2308         call->need_unbox_trampoline = unbox_trampoline;
2309
2310 #ifdef ENABLE_LLVM
2311         if (COMPILE_LLVM (cfg))
2312                 mono_llvm_emit_call (cfg, call);
2313         else
2314                 mono_arch_emit_call (cfg, call);
2315 #else
2316         mono_arch_emit_call (cfg, call);
2317 #endif
2318
2319         cfg->param_area = MAX (cfg->param_area, call->stack_usage);
2320         cfg->flags |= MONO_CFG_HAS_CALLS;
2321
2322         return call;
2323 }
2324
2325 static void
2326 set_rgctx_arg (MonoCompile *cfg, MonoCallInst *call, int rgctx_reg, MonoInst *rgctx_arg)
2327 {
2328         mono_call_inst_add_outarg_reg (cfg, call, rgctx_reg, MONO_ARCH_RGCTX_REG, FALSE);
2329         cfg->uses_rgctx_reg = TRUE;
2330         call->rgctx_reg = TRUE;
2331 #ifdef ENABLE_LLVM
2332         call->rgctx_arg_reg = rgctx_reg;
2333 #endif
2334 }
2335
2336 MonoInst*
2337 mini_emit_calli (MonoCompile *cfg, MonoMethodSignature *sig, MonoInst **args, MonoInst *addr, MonoInst *imt_arg, MonoInst *rgctx_arg)
2338 {
2339         MonoCallInst *call;
2340         MonoInst *ins;
2341         int rgctx_reg = -1;
2342         gboolean check_sp = FALSE;
2343
2344         if (cfg->check_pinvoke_callconv && cfg->method->wrapper_type == MONO_WRAPPER_MANAGED_TO_NATIVE) {
2345                 WrapperInfo *info = mono_marshal_get_wrapper_info (cfg->method);
2346
2347                 if (info && info->subtype == WRAPPER_SUBTYPE_PINVOKE)
2348                         check_sp = TRUE;
2349         }
2350
2351         if (rgctx_arg) {
2352                 rgctx_reg = mono_alloc_preg (cfg);
2353                 MONO_EMIT_NEW_UNALU (cfg, OP_MOVE, rgctx_reg, rgctx_arg->dreg);
2354         }
2355
2356         if (check_sp) {
2357                 if (!cfg->stack_inbalance_var)
2358                         cfg->stack_inbalance_var = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
2359
2360                 MONO_INST_NEW (cfg, ins, OP_GET_SP);
2361                 ins->dreg = cfg->stack_inbalance_var->dreg;
2362                 MONO_ADD_INS (cfg->cbb, ins);
2363         }
2364
2365         call = mono_emit_call_args (cfg, sig, args, TRUE, FALSE, FALSE, rgctx_arg ? TRUE : FALSE, FALSE, NULL);
2366
2367         call->inst.sreg1 = addr->dreg;
2368
2369         if (imt_arg)
2370                 emit_imt_argument (cfg, call, NULL, imt_arg);
2371
2372         MONO_ADD_INS (cfg->cbb, (MonoInst*)call);
2373
2374         if (check_sp) {
2375                 int sp_reg;
2376
2377                 sp_reg = mono_alloc_preg (cfg);
2378
2379                 MONO_INST_NEW (cfg, ins, OP_GET_SP);
2380                 ins->dreg = sp_reg;
2381                 MONO_ADD_INS (cfg->cbb, ins);
2382
2383                 /* Restore the stack so we don't crash when throwing the exception */
2384                 MONO_INST_NEW (cfg, ins, OP_SET_SP);
2385                 ins->sreg1 = cfg->stack_inbalance_var->dreg;
2386                 MONO_ADD_INS (cfg->cbb, ins);
2387
2388                 MONO_EMIT_NEW_BIALU (cfg, OP_COMPARE, -1, cfg->stack_inbalance_var->dreg, sp_reg);
2389                 MONO_EMIT_NEW_COND_EXC (cfg, NE_UN, "ExecutionEngineException");
2390         }
2391
2392         if (rgctx_arg)
2393                 set_rgctx_arg (cfg, call, rgctx_reg, rgctx_arg);
2394
2395         return (MonoInst*)call;
2396 }
2397
2398 static MonoInst*
2399 emit_get_rgctx_method (MonoCompile *cfg, int context_used, MonoMethod *cmethod, MonoRgctxInfoType rgctx_type);
2400
2401 static MonoInst*
2402 mono_emit_method_call_full (MonoCompile *cfg, MonoMethod *method, MonoMethodSignature *sig, gboolean tail,
2403                                                         MonoInst **args, MonoInst *this_ins, MonoInst *imt_arg, MonoInst *rgctx_arg)
2404 {
2405 #ifndef DISABLE_REMOTING
2406         gboolean might_be_remote = FALSE;
2407 #endif
2408         gboolean virtual_ = this_ins != NULL;
2409         gboolean enable_for_aot = TRUE;
2410         int context_used;
2411         MonoCallInst *call;
2412         MonoInst *call_target = NULL;
2413         int rgctx_reg = 0;
2414         gboolean need_unbox_trampoline;
2415
2416         if (!sig)
2417                 sig = mono_method_signature (method);
2418
2419         if (cfg->llvm_only && (mono_class_is_interface (method->klass)))
2420                 g_assert_not_reached ();
2421
2422         if (rgctx_arg) {
2423                 rgctx_reg = mono_alloc_preg (cfg);
2424                 MONO_EMIT_NEW_UNALU (cfg, OP_MOVE, rgctx_reg, rgctx_arg->dreg);
2425         }
2426
2427         if (method->string_ctor) {
2428                 /* Create the real signature */
2429                 /* FIXME: Cache these */
2430                 MonoMethodSignature *ctor_sig = mono_metadata_signature_dup_mempool (cfg->mempool, sig);
2431                 ctor_sig->ret = &mono_defaults.string_class->byval_arg;
2432
2433                 sig = ctor_sig;
2434         }
2435
2436         context_used = mini_method_check_context_used (cfg, method);
2437
2438 #ifndef DISABLE_REMOTING
2439         might_be_remote = this_ins && sig->hasthis &&
2440                 (mono_class_is_marshalbyref (method->klass) || method->klass == mono_defaults.object_class) &&
2441                 !(method->flags & METHOD_ATTRIBUTE_VIRTUAL) && (!MONO_CHECK_THIS (this_ins) || context_used);
2442
2443         if (might_be_remote && context_used) {
2444                 MonoInst *addr;
2445
2446                 g_assert (cfg->gshared);
2447
2448                 addr = emit_get_rgctx_method (cfg, context_used, method, MONO_RGCTX_INFO_REMOTING_INVOKE_WITH_CHECK);
2449
2450                 return mini_emit_calli (cfg, sig, args, addr, NULL, NULL);
2451         }
2452 #endif
2453
2454         if (cfg->llvm_only && !call_target && virtual_ && (method->flags & METHOD_ATTRIBUTE_VIRTUAL))
2455                 return emit_llvmonly_virtual_call (cfg, method, sig, 0, args);
2456
2457         need_unbox_trampoline = method->klass == mono_defaults.object_class || mono_class_is_interface (method->klass);
2458
2459         call = mono_emit_call_args (cfg, sig, args, FALSE, virtual_, tail, rgctx_arg ? TRUE : FALSE, need_unbox_trampoline, method);
2460
2461 #ifndef DISABLE_REMOTING
2462         if (might_be_remote)
2463                 call->method = mono_marshal_get_remoting_invoke_with_check (method);
2464         else
2465 #endif
2466                 call->method = method;
2467         call->inst.flags |= MONO_INST_HAS_METHOD;
2468         call->inst.inst_left = this_ins;
2469         call->tail_call = tail;
2470
2471         if (virtual_) {
2472                 int vtable_reg, slot_reg, this_reg;
2473                 int offset;
2474
2475                 this_reg = this_ins->dreg;
2476
2477                 if (!cfg->llvm_only && (method->klass->parent == mono_defaults.multicastdelegate_class) && !strcmp (method->name, "Invoke")) {
2478                         MonoInst *dummy_use;
2479
2480                         MONO_EMIT_NULL_CHECK (cfg, this_reg);
2481
2482                         /* Make a call to delegate->invoke_impl */
2483                         call->inst.inst_basereg = this_reg;
2484                         call->inst.inst_offset = MONO_STRUCT_OFFSET (MonoDelegate, invoke_impl);
2485                         MONO_ADD_INS (cfg->cbb, (MonoInst*)call);
2486
2487                         /* We must emit a dummy use here because the delegate trampoline will
2488                         replace the 'this' argument with the delegate target making this activation
2489                         no longer a root for the delegate.
2490                         This is an issue for delegates that target collectible code such as dynamic
2491                         methods of GC'able assemblies.
2492
2493                         For a test case look into #667921.
2494
2495                         FIXME: a dummy use is not the best way to do it as the local register allocator
2496                         will put it on a caller save register and spil it around the call.
2497                         Ideally, we would either put it on a callee save register or only do the store part.
2498                          */
2499                         EMIT_NEW_DUMMY_USE (cfg, dummy_use, args [0]);
2500
2501                         return (MonoInst*)call;
2502                 }
2503
2504                 if ((!cfg->compile_aot || enable_for_aot) &&
2505                         (!(method->flags & METHOD_ATTRIBUTE_VIRTUAL) ||
2506                          (MONO_METHOD_IS_FINAL (method) &&
2507                           method->wrapper_type != MONO_WRAPPER_REMOTING_INVOKE_WITH_CHECK)) &&
2508                         !(mono_class_is_marshalbyref (method->klass) && context_used)) {
2509                         /*
2510                          * the method is not virtual, we just need to ensure this is not null
2511                          * and then we can call the method directly.
2512                          */
2513 #ifndef DISABLE_REMOTING
2514                         if (mono_class_is_marshalbyref (method->klass) || method->klass == mono_defaults.object_class) {
2515                                 /*
2516                                  * The check above ensures method is not gshared, this is needed since
2517                                  * gshared methods can't have wrappers.
2518                                  */
2519                                 method = call->method = mono_marshal_get_remoting_invoke_with_check (method);
2520                         }
2521 #endif
2522
2523                         if (!method->string_ctor)
2524                                 MONO_EMIT_NEW_CHECK_THIS (cfg, this_reg);
2525
2526                         call->inst.opcode = callvirt_to_call (call->inst.opcode);
2527                 } else if ((method->flags & METHOD_ATTRIBUTE_VIRTUAL) && MONO_METHOD_IS_FINAL (method)) {
2528                         /*
2529                          * the method is virtual, but we can statically dispatch since either
2530                          * it's class or the method itself are sealed.
2531                          * But first we need to ensure it's not a null reference.
2532                          */
2533                         MONO_EMIT_NEW_CHECK_THIS (cfg, this_reg);
2534
2535                         call->inst.opcode = callvirt_to_call (call->inst.opcode);
2536                 } else if (call_target) {
2537                         vtable_reg = alloc_preg (cfg);
2538                         MONO_EMIT_NEW_LOAD_MEMBASE_FAULT (cfg, vtable_reg, this_reg, MONO_STRUCT_OFFSET (MonoObject, vtable));
2539
2540                         call->inst.opcode = callvirt_to_call_reg (call->inst.opcode);
2541                         call->inst.sreg1 = call_target->dreg;
2542                         call->inst.flags &= !MONO_INST_HAS_METHOD;
2543                 } else {
2544                         vtable_reg = alloc_preg (cfg);
2545                         MONO_EMIT_NEW_LOAD_MEMBASE_FAULT (cfg, vtable_reg, this_reg, MONO_STRUCT_OFFSET (MonoObject, vtable));
2546                         if (mono_class_is_interface (method->klass)) {
2547                                 guint32 imt_slot = mono_method_get_imt_slot (method);
2548                                 emit_imt_argument (cfg, call, call->method, imt_arg);
2549                                 slot_reg = vtable_reg;
2550                                 offset = ((gint32)imt_slot - MONO_IMT_SIZE) * SIZEOF_VOID_P;
2551                         } else {
2552                                 slot_reg = vtable_reg;
2553                                 offset = MONO_STRUCT_OFFSET (MonoVTable, vtable) +
2554                                         ((mono_method_get_vtable_index (method)) * (SIZEOF_VOID_P));
2555                                 if (imt_arg) {
2556                                         g_assert (mono_method_signature (method)->generic_param_count);
2557                                         emit_imt_argument (cfg, call, call->method, imt_arg);
2558                                 }
2559                         }
2560
2561                         call->inst.sreg1 = slot_reg;
2562                         call->inst.inst_offset = offset;
2563                         call->is_virtual = TRUE;
2564                 }
2565         }
2566
2567         MONO_ADD_INS (cfg->cbb, (MonoInst*)call);
2568
2569         if (rgctx_arg)
2570                 set_rgctx_arg (cfg, call, rgctx_reg, rgctx_arg);
2571
2572         return (MonoInst*)call;
2573 }
2574
2575 MonoInst*
2576 mono_emit_method_call (MonoCompile *cfg, MonoMethod *method, MonoInst **args, MonoInst *this_ins)
2577 {
2578         return mono_emit_method_call_full (cfg, method, mono_method_signature (method), FALSE, args, this_ins, NULL, NULL);
2579 }
2580
2581 MonoInst*
2582 mono_emit_native_call (MonoCompile *cfg, gconstpointer func, MonoMethodSignature *sig,
2583                                            MonoInst **args)
2584 {
2585         MonoCallInst *call;
2586
2587         g_assert (sig);
2588
2589         call = mono_emit_call_args (cfg, sig, args, FALSE, FALSE, FALSE, FALSE, FALSE, NULL);
2590         call->fptr = func;
2591
2592         MONO_ADD_INS (cfg->cbb, (MonoInst*)call);
2593
2594         return (MonoInst*)call;
2595 }
2596
2597 MonoInst*
2598 mono_emit_jit_icall (MonoCompile *cfg, gconstpointer func, MonoInst **args)
2599 {
2600         MonoJitICallInfo *info = mono_find_jit_icall_by_addr (func);
2601
2602         g_assert (info);
2603
2604         return mono_emit_native_call (cfg, mono_icall_get_wrapper (info), info->sig, args);
2605 }
2606
2607 /*
2608  * mono_emit_abs_call:
2609  *
2610  *   Emit a call to the runtime function described by PATCH_TYPE and DATA.
2611  */
2612 inline static MonoInst*
2613 mono_emit_abs_call (MonoCompile *cfg, MonoJumpInfoType patch_type, gconstpointer data,
2614                                         MonoMethodSignature *sig, MonoInst **args)
2615 {
2616         MonoJumpInfo *ji = mono_patch_info_new (cfg->mempool, 0, patch_type, data);
2617         MonoInst *ins;
2618
2619         /*
2620          * We pass ji as the call address, the PATCH_INFO_ABS resolving code will
2621          * handle it.
2622          */
2623         if (cfg->abs_patches == NULL)
2624                 cfg->abs_patches = g_hash_table_new (NULL, NULL);
2625         g_hash_table_insert (cfg->abs_patches, ji, ji);
2626         ins = mono_emit_native_call (cfg, ji, sig, args);
2627         ((MonoCallInst*)ins)->fptr_is_patch = TRUE;
2628         return ins;
2629 }
2630
2631 static MonoMethodSignature*
2632 sig_to_rgctx_sig (MonoMethodSignature *sig)
2633 {
2634         // FIXME: memory allocation
2635         MonoMethodSignature *res;
2636         int i;
2637
2638         res = (MonoMethodSignature *)g_malloc (MONO_SIZEOF_METHOD_SIGNATURE + (sig->param_count + 1) * sizeof (MonoType*));
2639         memcpy (res, sig, MONO_SIZEOF_METHOD_SIGNATURE);
2640         res->param_count = sig->param_count + 1;
2641         for (i = 0; i < sig->param_count; ++i)
2642                 res->params [i] = sig->params [i];
2643         res->params [sig->param_count] = &mono_defaults.int_class->this_arg;
2644         return res;
2645 }
2646
2647 /* Make an indirect call to FSIG passing an additional argument */
2648 static MonoInst*
2649 emit_extra_arg_calli (MonoCompile *cfg, MonoMethodSignature *fsig, MonoInst **orig_args, int arg_reg, MonoInst *call_target)
2650 {
2651         MonoMethodSignature *csig;
2652         MonoInst *args_buf [16];
2653         MonoInst **args;
2654         int i, pindex, tmp_reg;
2655
2656         /* Make a call with an rgctx/extra arg */
2657         if (fsig->param_count + 2 < 16)
2658                 args = args_buf;
2659         else
2660                 args = (MonoInst **)mono_mempool_alloc0 (cfg->mempool, sizeof (MonoInst*) * (fsig->param_count + 2));
2661         pindex = 0;
2662         if (fsig->hasthis)
2663                 args [pindex ++] = orig_args [0];
2664         for (i = 0; i < fsig->param_count; ++i)
2665                 args [pindex ++] = orig_args [fsig->hasthis + i];
2666         tmp_reg = alloc_preg (cfg);
2667         EMIT_NEW_UNALU (cfg, args [pindex], OP_MOVE, tmp_reg, arg_reg);
2668         csig = sig_to_rgctx_sig (fsig);
2669         return mini_emit_calli (cfg, csig, args, call_target, NULL, NULL);
2670 }
2671
2672 /* Emit an indirect call to the function descriptor ADDR */
2673 static MonoInst*
2674 emit_llvmonly_calli (MonoCompile *cfg, MonoMethodSignature *fsig, MonoInst **args, MonoInst *addr)
2675 {
2676         int addr_reg, arg_reg;
2677         MonoInst *call_target;
2678
2679         g_assert (cfg->llvm_only);
2680
2681         /*
2682          * addr points to a <addr, arg> pair, load both of them, and
2683          * make a call to addr, passing arg as an extra arg.
2684          */
2685         addr_reg = alloc_preg (cfg);
2686         EMIT_NEW_LOAD_MEMBASE (cfg, call_target, OP_LOAD_MEMBASE, addr_reg, addr->dreg, 0);
2687         arg_reg = alloc_preg (cfg);
2688         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, arg_reg, addr->dreg, sizeof (gpointer));
2689
2690         return emit_extra_arg_calli (cfg, fsig, args, arg_reg, call_target);
2691 }
2692
2693 static gboolean
2694 direct_icalls_enabled (MonoCompile *cfg)
2695 {
2696         return FALSE;
2697
2698         /* LLVM on amd64 can't handle calls to non-32 bit addresses */
2699 #ifdef TARGET_AMD64
2700         if (cfg->compile_llvm && !cfg->llvm_only)
2701                 return FALSE;
2702 #endif
2703         if (cfg->gen_sdb_seq_points || cfg->disable_direct_icalls)
2704                 return FALSE;
2705         return TRUE;
2706 }
2707
2708 MonoInst*
2709 mono_emit_jit_icall_by_info (MonoCompile *cfg, int il_offset, MonoJitICallInfo *info, MonoInst **args)
2710 {
2711         /*
2712          * Call the jit icall without a wrapper if possible.
2713          * The wrapper is needed for the following reasons:
2714          * - to handle exceptions thrown using mono_raise_exceptions () from the
2715          *   icall function. The EH code needs the lmf frame pushed by the
2716          *   wrapper to be able to unwind back to managed code.
2717          * - to be able to do stack walks for asynchronously suspended
2718          *   threads when debugging.
2719          */
2720         if (info->no_raise && direct_icalls_enabled (cfg)) {
2721                 char *name;
2722                 int costs;
2723
2724                 if (!info->wrapper_method) {
2725                         name = g_strdup_printf ("__icall_wrapper_%s", info->name);
2726                         info->wrapper_method = mono_marshal_get_icall_wrapper (info->sig, name, info->func, TRUE);
2727                         g_free (name);
2728                         mono_memory_barrier ();
2729                 }
2730
2731                 /*
2732                  * Inline the wrapper method, which is basically a call to the C icall, and
2733                  * an exception check.
2734                  */
2735                 costs = inline_method (cfg, info->wrapper_method, NULL,
2736                                                            args, NULL, il_offset, TRUE);
2737                 g_assert (costs > 0);
2738                 g_assert (!MONO_TYPE_IS_VOID (info->sig->ret));
2739
2740                 return args [0];
2741         } else {
2742                 return mono_emit_native_call (cfg, mono_icall_get_wrapper (info), info->sig, args);
2743         }
2744 }
2745
2746 static MonoInst*
2747 mono_emit_widen_call_res (MonoCompile *cfg, MonoInst *ins, MonoMethodSignature *fsig)
2748 {
2749         if (!MONO_TYPE_IS_VOID (fsig->ret)) {
2750                 if ((fsig->pinvoke || LLVM_ENABLED) && !fsig->ret->byref) {
2751                         int widen_op = -1;
2752
2753                         /*
2754                          * Native code might return non register sized integers
2755                          * without initializing the upper bits.
2756                          */
2757                         switch (mono_type_to_load_membase (cfg, fsig->ret)) {
2758                         case OP_LOADI1_MEMBASE:
2759                                 widen_op = OP_ICONV_TO_I1;
2760                                 break;
2761                         case OP_LOADU1_MEMBASE:
2762                                 widen_op = OP_ICONV_TO_U1;
2763                                 break;
2764                         case OP_LOADI2_MEMBASE:
2765                                 widen_op = OP_ICONV_TO_I2;
2766                                 break;
2767                         case OP_LOADU2_MEMBASE:
2768                                 widen_op = OP_ICONV_TO_U2;
2769                                 break;
2770                         default:
2771                                 break;
2772                         }
2773
2774                         if (widen_op != -1) {
2775                                 int dreg = alloc_preg (cfg);
2776                                 MonoInst *widen;
2777
2778                                 EMIT_NEW_UNALU (cfg, widen, widen_op, dreg, ins->dreg);
2779                                 widen->type = ins->type;
2780                                 ins = widen;
2781                         }
2782                 }
2783         }
2784
2785         return ins;
2786 }
2787
2788
2789 static void
2790 emit_method_access_failure (MonoCompile *cfg, MonoMethod *caller, MonoMethod *callee)
2791 {
2792         MonoInst *args [16];
2793
2794         args [0] = emit_get_rgctx_method (cfg, mono_method_check_context_used (caller), caller, MONO_RGCTX_INFO_METHOD);
2795         args [1] = emit_get_rgctx_method (cfg, mono_method_check_context_used (callee), callee, MONO_RGCTX_INFO_METHOD);
2796
2797         mono_emit_jit_icall (cfg, mono_throw_method_access, args);
2798 }
2799
2800 MonoMethod*
2801 mini_get_memcpy_method (void)
2802 {
2803         static MonoMethod *memcpy_method = NULL;
2804         if (!memcpy_method) {
2805                 memcpy_method = mono_class_get_method_from_name (mono_defaults.string_class, "memcpy", 3);
2806                 if (!memcpy_method)
2807                         g_error ("Old corlib found. Install a new one");
2808         }
2809         return memcpy_method;
2810 }
2811
2812 void
2813 mini_emit_write_barrier (MonoCompile *cfg, MonoInst *ptr, MonoInst *value)
2814 {
2815         int card_table_shift_bits;
2816         gpointer card_table_mask;
2817         guint8 *card_table;
2818         MonoInst *dummy_use;
2819         int nursery_shift_bits;
2820         size_t nursery_size;
2821
2822         if (!cfg->gen_write_barriers)
2823                 return;
2824
2825         //method->wrapper_type != MONO_WRAPPER_WRITE_BARRIER && !MONO_INS_IS_PCONST_NULL (sp [1])
2826
2827         card_table = mono_gc_get_card_table (&card_table_shift_bits, &card_table_mask);
2828
2829         mono_gc_get_nursery (&nursery_shift_bits, &nursery_size);
2830
2831         if (cfg->backend->have_card_table_wb && !cfg->compile_aot && card_table && nursery_shift_bits > 0 && !COMPILE_LLVM (cfg)) {
2832                 MonoInst *wbarrier;
2833
2834                 MONO_INST_NEW (cfg, wbarrier, OP_CARD_TABLE_WBARRIER);
2835                 wbarrier->sreg1 = ptr->dreg;
2836                 wbarrier->sreg2 = value->dreg;
2837                 MONO_ADD_INS (cfg->cbb, wbarrier);
2838         } else if (card_table) {
2839                 int offset_reg = alloc_preg (cfg);
2840                 int card_reg;
2841                 MonoInst *ins;
2842
2843                 /*
2844                  * We emit a fast light weight write barrier. This always marks cards as in the concurrent
2845                  * collector case, so, for the serial collector, it might slightly slow down nursery
2846                  * collections. We also expect that the host system and the target system have the same card
2847                  * table configuration, which is the case if they have the same pointer size.
2848                  */
2849
2850                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_SHR_UN_IMM, offset_reg, ptr->dreg, card_table_shift_bits);
2851                 if (card_table_mask)
2852                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_PAND_IMM, offset_reg, offset_reg, card_table_mask);
2853
2854                 /*We can't use PADD_IMM since the cardtable might end up in high addresses and amd64 doesn't support
2855                  * IMM's larger than 32bits.
2856                  */
2857                 ins = mini_emit_runtime_constant (cfg, MONO_PATCH_INFO_GC_CARD_TABLE_ADDR, NULL);
2858                 card_reg = ins->dreg;
2859
2860                 MONO_EMIT_NEW_BIALU (cfg, OP_PADD, offset_reg, offset_reg, card_reg);
2861                 MONO_EMIT_NEW_STORE_MEMBASE_IMM (cfg, OP_STOREI1_MEMBASE_IMM, offset_reg, 0, 1);
2862         } else {
2863                 MonoMethod *write_barrier = mono_gc_get_write_barrier ();
2864                 mono_emit_method_call (cfg, write_barrier, &ptr, NULL);
2865         }
2866
2867         EMIT_NEW_DUMMY_USE (cfg, dummy_use, value);
2868 }
2869
2870 MonoMethod*
2871 mini_get_memset_method (void)
2872 {
2873         static MonoMethod *memset_method = NULL;
2874         if (!memset_method) {
2875                 memset_method = mono_class_get_method_from_name (mono_defaults.string_class, "memset", 3);
2876                 if (!memset_method)
2877                         g_error ("Old corlib found. Install a new one");
2878         }
2879         return memset_method;
2880 }
2881
2882 void
2883 mini_emit_initobj (MonoCompile *cfg, MonoInst *dest, const guchar *ip, MonoClass *klass)
2884 {
2885         MonoInst *iargs [3];
2886         int n;
2887         guint32 align;
2888         MonoMethod *memset_method;
2889         MonoInst *size_ins = NULL;
2890         MonoInst *bzero_ins = NULL;
2891         static MonoMethod *bzero_method;
2892
2893         /* FIXME: Optimize this for the case when dest is an LDADDR */
2894         mono_class_init (klass);
2895         if (mini_is_gsharedvt_klass (klass)) {
2896                 size_ins = mini_emit_get_gsharedvt_info_klass (cfg, klass, MONO_RGCTX_INFO_VALUE_SIZE);
2897                 bzero_ins = mini_emit_get_gsharedvt_info_klass (cfg, klass, MONO_RGCTX_INFO_BZERO);
2898                 if (!bzero_method)
2899                         bzero_method = mono_class_get_method_from_name (mono_defaults.string_class, "bzero_aligned_1", 2);
2900                 g_assert (bzero_method);
2901                 iargs [0] = dest;
2902                 iargs [1] = size_ins;
2903                 mini_emit_calli (cfg, mono_method_signature (bzero_method), iargs, bzero_ins, NULL, NULL);
2904                 return;
2905         }
2906
2907         klass = mono_class_from_mono_type (mini_get_underlying_type (&klass->byval_arg));
2908
2909         n = mono_class_value_size (klass, &align);
2910
2911         if (n <= sizeof (gpointer) * 8) {
2912                 mini_emit_memset (cfg, dest->dreg, 0, n, 0, align);
2913         }
2914         else {
2915                 memset_method = mini_get_memset_method ();
2916                 iargs [0] = dest;
2917                 EMIT_NEW_ICONST (cfg, iargs [1], 0);
2918                 EMIT_NEW_ICONST (cfg, iargs [2], n);
2919                 mono_emit_method_call (cfg, memset_method, iargs, NULL);
2920         }
2921 }
2922
2923 /*
2924  * emit_get_rgctx:
2925  *
2926  *   Emit IR to return either the this pointer for instance method,
2927  * or the mrgctx for static methods.
2928  */
2929 static MonoInst*
2930 emit_get_rgctx (MonoCompile *cfg, MonoMethod *method, int context_used)
2931 {
2932         MonoInst *this_ins = NULL;
2933
2934         g_assert (cfg->gshared);
2935
2936         if (!(method->flags & METHOD_ATTRIBUTE_STATIC) &&
2937                         !(context_used & MONO_GENERIC_CONTEXT_USED_METHOD) &&
2938                 !method->klass->valuetype)
2939                 EMIT_NEW_VARLOAD (cfg, this_ins, cfg->this_arg, &mono_defaults.object_class->byval_arg);
2940
2941         if (context_used & MONO_GENERIC_CONTEXT_USED_METHOD) {
2942                 MonoInst *mrgctx_loc, *mrgctx_var;
2943
2944                 g_assert (!this_ins);
2945                 g_assert (method->is_inflated && mono_method_get_context (method)->method_inst);
2946
2947                 mrgctx_loc = mono_get_vtable_var (cfg);
2948                 EMIT_NEW_TEMPLOAD (cfg, mrgctx_var, mrgctx_loc->inst_c0);
2949
2950                 return mrgctx_var;
2951         } else if (MONO_CLASS_IS_INTERFACE (cfg->method->klass)) {
2952                 MonoInst *mrgctx_loc, *mrgctx_var;
2953
2954                 /* Default interface methods need an mrgctx since the vtabke at runtime points at an implementing class */
2955                 mrgctx_loc = mono_get_vtable_var (cfg);
2956                 EMIT_NEW_TEMPLOAD (cfg, mrgctx_var, mrgctx_loc->inst_c0);
2957
2958                 g_assert (mono_method_needs_static_rgctx_invoke (cfg->method, TRUE));
2959
2960                 return mrgctx_var;
2961         } else if (method->flags & METHOD_ATTRIBUTE_STATIC || method->klass->valuetype) {
2962                 MonoInst *vtable_loc, *vtable_var;
2963
2964                 g_assert (!this_ins);
2965
2966                 vtable_loc = mono_get_vtable_var (cfg);
2967                 EMIT_NEW_TEMPLOAD (cfg, vtable_var, vtable_loc->inst_c0);
2968
2969                 if (method->is_inflated && mono_method_get_context (method)->method_inst) {
2970                         MonoInst *mrgctx_var = vtable_var;
2971                         int vtable_reg;
2972
2973                         vtable_reg = alloc_preg (cfg);
2974                         EMIT_NEW_LOAD_MEMBASE (cfg, vtable_var, OP_LOAD_MEMBASE, vtable_reg, mrgctx_var->dreg, MONO_STRUCT_OFFSET (MonoMethodRuntimeGenericContext, class_vtable));
2975                         vtable_var->type = STACK_PTR;
2976                 }
2977
2978                 return vtable_var;
2979         } else {
2980                 MonoInst *ins;
2981                 int vtable_reg;
2982
2983                 vtable_reg = alloc_preg (cfg);
2984                 EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOAD_MEMBASE, vtable_reg, this_ins->dreg, MONO_STRUCT_OFFSET (MonoObject, vtable));
2985                 return ins;
2986         }
2987 }
2988
2989 static MonoJumpInfoRgctxEntry *
2990 mono_patch_info_rgctx_entry_new (MonoMemPool *mp, MonoMethod *method, gboolean in_mrgctx, MonoJumpInfoType patch_type, gconstpointer patch_data, MonoRgctxInfoType info_type)
2991 {
2992         MonoJumpInfoRgctxEntry *res = (MonoJumpInfoRgctxEntry *)mono_mempool_alloc0 (mp, sizeof (MonoJumpInfoRgctxEntry));
2993         res->method = method;
2994         res->in_mrgctx = in_mrgctx;
2995         res->data = (MonoJumpInfo *)mono_mempool_alloc0 (mp, sizeof (MonoJumpInfo));
2996         res->data->type = patch_type;
2997         res->data->data.target = patch_data;
2998         res->info_type = info_type;
2999
3000         return res;
3001 }
3002
3003 static inline MonoInst*
3004 emit_rgctx_fetch_inline (MonoCompile *cfg, MonoInst *rgctx, MonoJumpInfoRgctxEntry *entry)
3005 {
3006         MonoInst *args [16];
3007         MonoInst *call;
3008
3009         // FIXME: No fastpath since the slot is not a compile time constant
3010         args [0] = rgctx;
3011         EMIT_NEW_AOTCONST (cfg, args [1], MONO_PATCH_INFO_RGCTX_SLOT_INDEX, entry);
3012         if (entry->in_mrgctx)
3013                 call = mono_emit_jit_icall (cfg, mono_fill_method_rgctx, args);
3014         else
3015                 call = mono_emit_jit_icall (cfg, mono_fill_class_rgctx, args);
3016         return call;
3017 #if 0
3018         /*
3019          * FIXME: This can be called during decompose, which is a problem since it creates
3020          * new bblocks.
3021          * Also, the fastpath doesn't work since the slot number is dynamically allocated.
3022          */
3023         int i, slot, depth, index, rgctx_reg, val_reg, res_reg;
3024         gboolean mrgctx;
3025         MonoBasicBlock *is_null_bb, *end_bb;
3026         MonoInst *res, *ins, *call;
3027         MonoInst *args[16];
3028
3029         slot = mini_get_rgctx_entry_slot (entry);
3030
3031         mrgctx = MONO_RGCTX_SLOT_IS_MRGCTX (slot);
3032         index = MONO_RGCTX_SLOT_INDEX (slot);
3033         if (mrgctx)
3034                 index += MONO_SIZEOF_METHOD_RUNTIME_GENERIC_CONTEXT / sizeof (gpointer);
3035         for (depth = 0; ; ++depth) {
3036                 int size = mono_class_rgctx_get_array_size (depth, mrgctx);
3037
3038                 if (index < size - 1)
3039                         break;
3040                 index -= size - 1;
3041         }
3042
3043         NEW_BBLOCK (cfg, end_bb);
3044         NEW_BBLOCK (cfg, is_null_bb);
3045
3046         if (mrgctx) {
3047                 rgctx_reg = rgctx->dreg;
3048         } else {
3049                 rgctx_reg = alloc_preg (cfg);
3050
3051                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, rgctx_reg, rgctx->dreg, MONO_STRUCT_OFFSET (MonoVTable, runtime_generic_context));
3052                 // FIXME: Avoid this check by allocating the table when the vtable is created etc.
3053                 NEW_BBLOCK (cfg, is_null_bb);
3054
3055                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, rgctx_reg, 0);
3056                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBEQ, is_null_bb);
3057         }
3058
3059         for (i = 0; i < depth; ++i) {
3060                 int array_reg = alloc_preg (cfg);
3061
3062                 /* load ptr to next array */
3063                 if (mrgctx && i == 0)
3064                         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, array_reg, rgctx_reg, MONO_SIZEOF_METHOD_RUNTIME_GENERIC_CONTEXT);
3065                 else
3066                         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, array_reg, rgctx_reg, 0);
3067                 rgctx_reg = array_reg;
3068                 /* is the ptr null? */
3069                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, rgctx_reg, 0);
3070                 /* if yes, jump to actual trampoline */
3071                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBEQ, is_null_bb);
3072         }
3073
3074         /* fetch slot */
3075         val_reg = alloc_preg (cfg);
3076         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, val_reg, rgctx_reg, (index + 1) * sizeof (gpointer));
3077         /* is the slot null? */
3078         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, val_reg, 0);
3079         /* if yes, jump to actual trampoline */
3080         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBEQ, is_null_bb);
3081
3082         /* Fastpath */
3083         res_reg = alloc_preg (cfg);
3084         MONO_INST_NEW (cfg, ins, OP_MOVE);
3085         ins->dreg = res_reg;
3086         ins->sreg1 = val_reg;
3087         MONO_ADD_INS (cfg->cbb, ins);
3088         res = ins;
3089         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
3090
3091         /* Slowpath */
3092         MONO_START_BB (cfg, is_null_bb);
3093         args [0] = rgctx;
3094         EMIT_NEW_ICONST (cfg, args [1], index);
3095         if (mrgctx)
3096                 call = mono_emit_jit_icall (cfg, mono_fill_method_rgctx, args);
3097         else
3098                 call = mono_emit_jit_icall (cfg, mono_fill_class_rgctx, args);
3099         MONO_INST_NEW (cfg, ins, OP_MOVE);
3100         ins->dreg = res_reg;
3101         ins->sreg1 = call->dreg;
3102         MONO_ADD_INS (cfg->cbb, ins);
3103         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
3104
3105         MONO_START_BB (cfg, end_bb);
3106
3107         return res;
3108 #endif
3109 }
3110
3111 /*
3112  * emit_rgctx_fetch:
3113  *
3114  *   Emit IR to load the value of the rgctx entry ENTRY from the rgctx
3115  * given by RGCTX.
3116  */
3117 static inline MonoInst*
3118 emit_rgctx_fetch (MonoCompile *cfg, MonoInst *rgctx, MonoJumpInfoRgctxEntry *entry)
3119 {
3120         if (cfg->llvm_only)
3121                 return emit_rgctx_fetch_inline (cfg, rgctx, entry);
3122         else
3123                 return mono_emit_abs_call (cfg, MONO_PATCH_INFO_RGCTX_FETCH, entry, helper_sig_rgctx_lazy_fetch_trampoline, &rgctx);
3124 }
3125
3126 MonoInst*
3127 mini_emit_get_rgctx_klass (MonoCompile *cfg, int context_used,
3128                                           MonoClass *klass, MonoRgctxInfoType rgctx_type)
3129 {
3130         MonoJumpInfoRgctxEntry *entry = mono_patch_info_rgctx_entry_new (cfg->mempool, cfg->method, context_used & MONO_GENERIC_CONTEXT_USED_METHOD, MONO_PATCH_INFO_CLASS, klass, rgctx_type);
3131         MonoInst *rgctx = emit_get_rgctx (cfg, cfg->method, context_used);
3132
3133         return emit_rgctx_fetch (cfg, rgctx, entry);
3134 }
3135
3136 static MonoInst*
3137 emit_get_rgctx_sig (MonoCompile *cfg, int context_used,
3138                                         MonoMethodSignature *sig, MonoRgctxInfoType rgctx_type)
3139 {
3140         MonoJumpInfoRgctxEntry *entry = mono_patch_info_rgctx_entry_new (cfg->mempool, cfg->method, context_used & MONO_GENERIC_CONTEXT_USED_METHOD, MONO_PATCH_INFO_SIGNATURE, sig, rgctx_type);
3141         MonoInst *rgctx = emit_get_rgctx (cfg, cfg->method, context_used);
3142
3143         return emit_rgctx_fetch (cfg, rgctx, entry);
3144 }
3145
3146 static MonoInst*
3147 emit_get_rgctx_gsharedvt_call (MonoCompile *cfg, int context_used,
3148                                                            MonoMethodSignature *sig, MonoMethod *cmethod, MonoRgctxInfoType rgctx_type)
3149 {
3150         MonoJumpInfoGSharedVtCall *call_info;
3151         MonoJumpInfoRgctxEntry *entry;
3152         MonoInst *rgctx;
3153
3154         call_info = (MonoJumpInfoGSharedVtCall *)mono_mempool_alloc0 (cfg->mempool, sizeof (MonoJumpInfoGSharedVtCall));
3155         call_info->sig = sig;
3156         call_info->method = cmethod;
3157
3158         entry = mono_patch_info_rgctx_entry_new (cfg->mempool, cfg->method, context_used & MONO_GENERIC_CONTEXT_USED_METHOD, MONO_PATCH_INFO_GSHAREDVT_CALL, call_info, rgctx_type);
3159         rgctx = emit_get_rgctx (cfg, cfg->method, context_used);
3160
3161         return emit_rgctx_fetch (cfg, rgctx, entry);
3162 }
3163
3164 /*
3165  * emit_get_rgctx_virt_method:
3166  *
3167  *   Return data for method VIRT_METHOD for a receiver of type KLASS.
3168  */
3169 static MonoInst*
3170 emit_get_rgctx_virt_method (MonoCompile *cfg, int context_used,
3171                                                         MonoClass *klass, MonoMethod *virt_method, MonoRgctxInfoType rgctx_type)
3172 {
3173         MonoJumpInfoVirtMethod *info;
3174         MonoJumpInfoRgctxEntry *entry;
3175         MonoInst *rgctx;
3176
3177         info = (MonoJumpInfoVirtMethod *)mono_mempool_alloc0 (cfg->mempool, sizeof (MonoJumpInfoVirtMethod));
3178         info->klass = klass;
3179         info->method = virt_method;
3180
3181         entry = mono_patch_info_rgctx_entry_new (cfg->mempool, cfg->method, context_used & MONO_GENERIC_CONTEXT_USED_METHOD, MONO_PATCH_INFO_VIRT_METHOD, info, rgctx_type);
3182         rgctx = emit_get_rgctx (cfg, cfg->method, context_used);
3183
3184         return emit_rgctx_fetch (cfg, rgctx, entry);
3185 }
3186
3187 static MonoInst*
3188 emit_get_rgctx_gsharedvt_method (MonoCompile *cfg, int context_used,
3189                                                                  MonoMethod *cmethod, MonoGSharedVtMethodInfo *info)
3190 {
3191         MonoJumpInfoRgctxEntry *entry;
3192         MonoInst *rgctx;
3193
3194         entry = mono_patch_info_rgctx_entry_new (cfg->mempool, cfg->method, context_used & MONO_GENERIC_CONTEXT_USED_METHOD, MONO_PATCH_INFO_GSHAREDVT_METHOD, info, MONO_RGCTX_INFO_METHOD_GSHAREDVT_INFO);
3195         rgctx = emit_get_rgctx (cfg, cfg->method, context_used);
3196
3197         return emit_rgctx_fetch (cfg, rgctx, entry);
3198 }
3199
3200 /*
3201  * emit_get_rgctx_method:
3202  *
3203  *   Emit IR to load the property RGCTX_TYPE of CMETHOD. If context_used is 0, emit
3204  * normal constants, else emit a load from the rgctx.
3205  */
3206 static MonoInst*
3207 emit_get_rgctx_method (MonoCompile *cfg, int context_used,
3208                                            MonoMethod *cmethod, MonoRgctxInfoType rgctx_type)
3209 {
3210         if (!context_used) {
3211                 MonoInst *ins;
3212
3213                 switch (rgctx_type) {
3214                 case MONO_RGCTX_INFO_METHOD:
3215                         EMIT_NEW_METHODCONST (cfg, ins, cmethod);
3216                         return ins;
3217                 case MONO_RGCTX_INFO_METHOD_RGCTX:
3218                         EMIT_NEW_METHOD_RGCTX_CONST (cfg, ins, cmethod);
3219                         return ins;
3220                 default:
3221                         g_assert_not_reached ();
3222                 }
3223         } else {
3224                 MonoJumpInfoRgctxEntry *entry = mono_patch_info_rgctx_entry_new (cfg->mempool, cfg->method, context_used & MONO_GENERIC_CONTEXT_USED_METHOD, MONO_PATCH_INFO_METHODCONST, cmethod, rgctx_type);
3225                 MonoInst *rgctx = emit_get_rgctx (cfg, cfg->method, context_used);
3226
3227                 return emit_rgctx_fetch (cfg, rgctx, entry);
3228         }
3229 }
3230
3231 static MonoInst*
3232 emit_get_rgctx_field (MonoCompile *cfg, int context_used,
3233                                           MonoClassField *field, MonoRgctxInfoType rgctx_type)
3234 {
3235         MonoJumpInfoRgctxEntry *entry = mono_patch_info_rgctx_entry_new (cfg->mempool, cfg->method, context_used & MONO_GENERIC_CONTEXT_USED_METHOD, MONO_PATCH_INFO_FIELD, field, rgctx_type);
3236         MonoInst *rgctx = emit_get_rgctx (cfg, cfg->method, context_used);
3237
3238         return emit_rgctx_fetch (cfg, rgctx, entry);
3239 }
3240
3241 static int
3242 get_gsharedvt_info_slot (MonoCompile *cfg, gpointer data, MonoRgctxInfoType rgctx_type)
3243 {
3244         MonoGSharedVtMethodInfo *info = cfg->gsharedvt_info;
3245         MonoRuntimeGenericContextInfoTemplate *template_;
3246         int i, idx;
3247
3248         g_assert (info);
3249
3250         for (i = 0; i < info->num_entries; ++i) {
3251                 MonoRuntimeGenericContextInfoTemplate *otemplate = &info->entries [i];
3252
3253                 if (otemplate->info_type == rgctx_type && otemplate->data == data && rgctx_type != MONO_RGCTX_INFO_LOCAL_OFFSET)
3254                         return i;
3255         }
3256
3257         if (info->num_entries == info->count_entries) {
3258                 MonoRuntimeGenericContextInfoTemplate *new_entries;
3259                 int new_count_entries = info->count_entries ? info->count_entries * 2 : 16;
3260
3261                 new_entries = (MonoRuntimeGenericContextInfoTemplate *)mono_mempool_alloc0 (cfg->mempool, sizeof (MonoRuntimeGenericContextInfoTemplate) * new_count_entries);
3262
3263                 memcpy (new_entries, info->entries, sizeof (MonoRuntimeGenericContextInfoTemplate) * info->count_entries);
3264                 info->entries = new_entries;
3265                 info->count_entries = new_count_entries;
3266         }
3267
3268         idx = info->num_entries;
3269         template_ = &info->entries [idx];
3270         template_->info_type = rgctx_type;
3271         template_->data = data;
3272
3273         info->num_entries ++;
3274
3275         return idx;
3276 }
3277
3278 /*
3279  * emit_get_gsharedvt_info:
3280  *
3281  *   This is similar to emit_get_rgctx_.., but loads the data from the gsharedvt info var instead of calling an rgctx fetch trampoline.
3282  */
3283 static MonoInst*
3284 emit_get_gsharedvt_info (MonoCompile *cfg, gpointer data, MonoRgctxInfoType rgctx_type)
3285 {
3286         MonoInst *ins;
3287         int idx, dreg;
3288
3289         idx = get_gsharedvt_info_slot (cfg, data, rgctx_type);
3290         /* Load info->entries [idx] */
3291         dreg = alloc_preg (cfg);
3292         EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOAD_MEMBASE, dreg, cfg->gsharedvt_info_var->dreg, MONO_STRUCT_OFFSET (MonoGSharedVtMethodRuntimeInfo, entries) + (idx * sizeof (gpointer)));
3293
3294         return ins;
3295 }
3296
3297 MonoInst*
3298 mini_emit_get_gsharedvt_info_klass (MonoCompile *cfg, MonoClass *klass, MonoRgctxInfoType rgctx_type)
3299 {
3300         return emit_get_gsharedvt_info (cfg, &klass->byval_arg, rgctx_type);
3301 }
3302
3303 /*
3304  * On return the caller must check @klass for load errors.
3305  */
3306 static void
3307 emit_class_init (MonoCompile *cfg, MonoClass *klass)
3308 {
3309         MonoInst *vtable_arg;
3310         int context_used;
3311
3312         context_used = mini_class_check_context_used (cfg, klass);
3313
3314         if (context_used) {
3315                 vtable_arg = mini_emit_get_rgctx_klass (cfg, context_used,
3316                                                                                    klass, MONO_RGCTX_INFO_VTABLE);
3317         } else {
3318                 MonoVTable *vtable = mono_class_vtable (cfg->domain, klass);
3319
3320                 if (!vtable)
3321                         return;
3322                 EMIT_NEW_VTABLECONST (cfg, vtable_arg, vtable);
3323         }
3324
3325         if (!COMPILE_LLVM (cfg) && cfg->backend->have_op_generic_class_init) {
3326                 MonoInst *ins;
3327
3328                 /*
3329                  * Using an opcode instead of emitting IR here allows the hiding of the call inside the opcode,
3330                  * so this doesn't have to clobber any regs and it doesn't break basic blocks.
3331                  */
3332                 MONO_INST_NEW (cfg, ins, OP_GENERIC_CLASS_INIT);
3333                 ins->sreg1 = vtable_arg->dreg;
3334                 MONO_ADD_INS (cfg->cbb, ins);
3335         } else {
3336                 int inited_reg;
3337                 MonoBasicBlock *inited_bb;
3338                 MonoInst *args [16];
3339
3340                 inited_reg = alloc_ireg (cfg);
3341
3342                 MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADU1_MEMBASE, inited_reg, vtable_arg->dreg, MONO_STRUCT_OFFSET (MonoVTable, initialized));
3343
3344                 NEW_BBLOCK (cfg, inited_bb);
3345
3346                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, inited_reg, 0);
3347                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_IBNE_UN, inited_bb);
3348
3349                 args [0] = vtable_arg;
3350                 mono_emit_jit_icall (cfg, mono_generic_class_init, args);
3351
3352                 MONO_START_BB (cfg, inited_bb);
3353         }
3354 }
3355
3356 static void
3357 emit_seq_point (MonoCompile *cfg, MonoMethod *method, guint8* ip, gboolean intr_loc, gboolean nonempty_stack)
3358 {
3359         MonoInst *ins;
3360
3361         if (cfg->gen_seq_points && cfg->method == method) {
3362                 NEW_SEQ_POINT (cfg, ins, ip - cfg->header->code, intr_loc);
3363                 if (nonempty_stack)
3364                         ins->flags |= MONO_INST_NONEMPTY_STACK;
3365                 MONO_ADD_INS (cfg->cbb, ins);
3366         }
3367 }
3368
3369 void
3370 mini_save_cast_details (MonoCompile *cfg, MonoClass *klass, int obj_reg, gboolean null_check)
3371 {
3372         if (mini_get_debug_options ()->better_cast_details) {
3373                 int vtable_reg = alloc_preg (cfg);
3374                 int klass_reg = alloc_preg (cfg);
3375                 MonoBasicBlock *is_null_bb = NULL;
3376                 MonoInst *tls_get;
3377                 int to_klass_reg, context_used;
3378
3379                 if (null_check) {
3380                         NEW_BBLOCK (cfg, is_null_bb);
3381
3382                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, obj_reg, 0);
3383                         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBEQ, is_null_bb);
3384                 }
3385
3386                 tls_get = mono_create_tls_get (cfg, TLS_KEY_JIT_TLS);
3387                 if (!tls_get) {
3388                         fprintf (stderr, "error: --debug=casts not supported on this platform.\n.");
3389                         exit (1);
3390                 }
3391
3392                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, vtable_reg, obj_reg, MONO_STRUCT_OFFSET (MonoObject, vtable));
3393                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, klass_reg, vtable_reg, MONO_STRUCT_OFFSET (MonoVTable, klass));
3394
3395                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, tls_get->dreg, MONO_STRUCT_OFFSET (MonoJitTlsData, class_cast_from), klass_reg);
3396
3397                 context_used = mini_class_check_context_used (cfg, klass);
3398                 if (context_used) {
3399                         MonoInst *class_ins;
3400
3401                         class_ins = mini_emit_get_rgctx_klass (cfg, context_used, klass, MONO_RGCTX_INFO_KLASS);
3402                         to_klass_reg = class_ins->dreg;
3403                 } else {
3404                         to_klass_reg = alloc_preg (cfg);
3405                         MONO_EMIT_NEW_CLASSCONST (cfg, to_klass_reg, klass);
3406                 }
3407                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, tls_get->dreg, MONO_STRUCT_OFFSET (MonoJitTlsData, class_cast_to), to_klass_reg);
3408
3409                 if (null_check)
3410                         MONO_START_BB (cfg, is_null_bb);
3411         }
3412 }
3413
3414 void
3415 mini_reset_cast_details (MonoCompile *cfg)
3416 {
3417         /* Reset the variables holding the cast details */
3418         if (mini_get_debug_options ()->better_cast_details) {
3419                 MonoInst *tls_get = mono_create_tls_get (cfg, TLS_KEY_JIT_TLS);
3420                 /* It is enough to reset the from field */
3421                 MONO_EMIT_NEW_STORE_MEMBASE_IMM (cfg, OP_STORE_MEMBASE_IMM, tls_get->dreg, MONO_STRUCT_OFFSET (MonoJitTlsData, class_cast_from), 0);
3422         }
3423 }
3424
3425 /*
3426  * On return the caller must check @array_class for load errors
3427  */
3428 static void
3429 mini_emit_check_array_type (MonoCompile *cfg, MonoInst *obj, MonoClass *array_class)
3430 {
3431         int vtable_reg = alloc_preg (cfg);
3432         int context_used;
3433
3434         context_used = mini_class_check_context_used (cfg, array_class);
3435
3436         mini_save_cast_details (cfg, array_class, obj->dreg, FALSE);
3437
3438         MONO_EMIT_NEW_LOAD_MEMBASE_FAULT (cfg, vtable_reg, obj->dreg, MONO_STRUCT_OFFSET (MonoObject, vtable));
3439
3440         if (cfg->opt & MONO_OPT_SHARED) {
3441                 int class_reg = alloc_preg (cfg);
3442                 MonoInst *ins;
3443
3444                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, class_reg, vtable_reg, MONO_STRUCT_OFFSET (MonoVTable, klass));
3445                 ins = mini_emit_runtime_constant (cfg, MONO_PATCH_INFO_CLASS, array_class);
3446                 MONO_EMIT_NEW_BIALU (cfg, OP_COMPARE, -1, class_reg, ins->dreg);
3447         } else if (context_used) {
3448                 MonoInst *vtable_ins;
3449
3450                 vtable_ins = mini_emit_get_rgctx_klass (cfg, context_used, array_class, MONO_RGCTX_INFO_VTABLE);
3451                 MONO_EMIT_NEW_BIALU (cfg, OP_COMPARE, -1, vtable_reg, vtable_ins->dreg);
3452         } else {
3453                 if (cfg->compile_aot) {
3454                         int vt_reg;
3455                         MonoVTable *vtable;
3456
3457                         if (!(vtable = mono_class_vtable (cfg->domain, array_class)))
3458                                 return;
3459                         vt_reg = alloc_preg (cfg);
3460                         MONO_EMIT_NEW_VTABLECONST (cfg, vt_reg, vtable);
3461                         MONO_EMIT_NEW_BIALU (cfg, OP_COMPARE, -1, vtable_reg, vt_reg);
3462                 } else {
3463                         MonoVTable *vtable;
3464                         if (!(vtable = mono_class_vtable (cfg->domain, array_class)))
3465                                 return;
3466                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, vtable_reg, vtable);
3467                 }
3468         }
3469
3470         MONO_EMIT_NEW_COND_EXC (cfg, NE_UN, "ArrayTypeMismatchException");
3471
3472         mini_reset_cast_details (cfg);
3473 }
3474
3475 /**
3476  * Handles unbox of a Nullable<T>. If context_used is non zero, then shared
3477  * generic code is generated.
3478  */
3479 static MonoInst*
3480 handle_unbox_nullable (MonoCompile* cfg, MonoInst* val, MonoClass* klass, int context_used)
3481 {
3482         MonoMethod* method = mono_class_get_method_from_name (klass, "Unbox", 1);
3483
3484         if (context_used) {
3485                 MonoInst *rgctx, *addr;
3486
3487                 /* FIXME: What if the class is shared?  We might not
3488                    have to get the address of the method from the
3489                    RGCTX. */
3490                 addr = emit_get_rgctx_method (cfg, context_used, method,
3491                                                                           MONO_RGCTX_INFO_GENERIC_METHOD_CODE);
3492                 if (cfg->llvm_only) {
3493                         cfg->signatures = g_slist_prepend_mempool (cfg->mempool, cfg->signatures, mono_method_signature (method));
3494                         return emit_llvmonly_calli (cfg, mono_method_signature (method), &val, addr);
3495                 } else {
3496                         rgctx = emit_get_rgctx (cfg, cfg->method, context_used);
3497
3498                         return mini_emit_calli (cfg, mono_method_signature (method), &val, addr, NULL, rgctx);
3499                 }
3500         } else {
3501                 gboolean pass_vtable, pass_mrgctx;
3502                 MonoInst *rgctx_arg = NULL;
3503
3504                 check_method_sharing (cfg, method, &pass_vtable, &pass_mrgctx);
3505                 g_assert (!pass_mrgctx);
3506
3507                 if (pass_vtable) {
3508                         MonoVTable *vtable = mono_class_vtable (cfg->domain, method->klass);
3509
3510                         g_assert (vtable);
3511                         EMIT_NEW_VTABLECONST (cfg, rgctx_arg, vtable);
3512                 }
3513
3514                 return mono_emit_method_call_full (cfg, method, NULL, FALSE, &val, NULL, NULL, rgctx_arg);
3515         }
3516 }
3517
3518 static MonoInst*
3519 handle_unbox (MonoCompile *cfg, MonoClass *klass, MonoInst **sp, int context_used)
3520 {
3521         MonoInst *add;
3522         int obj_reg;
3523         int vtable_reg = alloc_dreg (cfg ,STACK_PTR);
3524         int klass_reg = alloc_dreg (cfg ,STACK_PTR);
3525         int eclass_reg = alloc_dreg (cfg ,STACK_PTR);
3526         int rank_reg = alloc_dreg (cfg ,STACK_I4);
3527
3528         obj_reg = sp [0]->dreg;
3529         MONO_EMIT_NEW_LOAD_MEMBASE_FAULT (cfg, vtable_reg, obj_reg, MONO_STRUCT_OFFSET (MonoObject, vtable));
3530         MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADU1_MEMBASE, rank_reg, vtable_reg, MONO_STRUCT_OFFSET (MonoVTable, rank));
3531
3532         /* FIXME: generics */
3533         g_assert (klass->rank == 0);
3534
3535         // Check rank == 0
3536         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, rank_reg, 0);
3537         MONO_EMIT_NEW_COND_EXC (cfg, NE_UN, "InvalidCastException");
3538
3539         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, klass_reg, vtable_reg, MONO_STRUCT_OFFSET (MonoVTable, klass));
3540         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, eclass_reg, klass_reg, MONO_STRUCT_OFFSET (MonoClass, element_class));
3541
3542         if (context_used) {
3543                 MonoInst *element_class;
3544
3545                 /* This assertion is from the unboxcast insn */
3546                 g_assert (klass->rank == 0);
3547
3548                 element_class = mini_emit_get_rgctx_klass (cfg, context_used,
3549                                 klass, MONO_RGCTX_INFO_ELEMENT_KLASS);
3550
3551                 MONO_EMIT_NEW_BIALU (cfg, OP_COMPARE, -1, eclass_reg, element_class->dreg);
3552                 MONO_EMIT_NEW_COND_EXC (cfg, NE_UN, "InvalidCastException");
3553         } else {
3554                 mini_save_cast_details (cfg, klass->element_class, obj_reg, FALSE);
3555                 mini_emit_class_check (cfg, eclass_reg, klass->element_class);
3556                 mini_reset_cast_details (cfg);
3557         }
3558
3559         NEW_BIALU_IMM (cfg, add, OP_ADD_IMM, alloc_dreg (cfg, STACK_MP), obj_reg, sizeof (MonoObject));
3560         MONO_ADD_INS (cfg->cbb, add);
3561         add->type = STACK_MP;
3562         add->klass = klass;
3563
3564         return add;
3565 }
3566
3567 static MonoInst*
3568 handle_unbox_gsharedvt (MonoCompile *cfg, MonoClass *klass, MonoInst *obj)
3569 {
3570         MonoInst *addr, *klass_inst, *is_ref, *args[16];
3571         MonoBasicBlock *is_ref_bb, *is_nullable_bb, *end_bb;
3572         MonoInst *ins;
3573         int dreg, addr_reg;
3574
3575         klass_inst = mini_emit_get_gsharedvt_info_klass (cfg, klass, MONO_RGCTX_INFO_KLASS);
3576
3577         /* obj */
3578         args [0] = obj;
3579
3580         /* klass */
3581         args [1] = klass_inst;
3582
3583         /* CASTCLASS */
3584         obj = mono_emit_jit_icall (cfg, mono_object_castclass_unbox, args);
3585
3586         NEW_BBLOCK (cfg, is_ref_bb);
3587         NEW_BBLOCK (cfg, is_nullable_bb);
3588         NEW_BBLOCK (cfg, end_bb);
3589         is_ref = mini_emit_get_gsharedvt_info_klass (cfg, klass, MONO_RGCTX_INFO_CLASS_BOX_TYPE);
3590         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, is_ref->dreg, MONO_GSHAREDVT_BOX_TYPE_REF);
3591         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_IBEQ, is_ref_bb);
3592
3593         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, is_ref->dreg, MONO_GSHAREDVT_BOX_TYPE_NULLABLE);
3594         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_IBEQ, is_nullable_bb);
3595
3596         /* This will contain either the address of the unboxed vtype, or an address of the temporary where the ref is stored */
3597         addr_reg = alloc_dreg (cfg, STACK_MP);
3598
3599         /* Non-ref case */
3600         /* UNBOX */
3601         NEW_BIALU_IMM (cfg, addr, OP_ADD_IMM, addr_reg, obj->dreg, sizeof (MonoObject));
3602         MONO_ADD_INS (cfg->cbb, addr);
3603
3604         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
3605
3606         /* Ref case */
3607         MONO_START_BB (cfg, is_ref_bb);
3608
3609         /* Save the ref to a temporary */
3610         dreg = alloc_ireg (cfg);
3611         EMIT_NEW_VARLOADA_VREG (cfg, addr, dreg, &klass->byval_arg);
3612         addr->dreg = addr_reg;
3613         MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, addr->dreg, 0, obj->dreg);
3614         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
3615
3616         /* Nullable case */
3617         MONO_START_BB (cfg, is_nullable_bb);
3618
3619         {
3620                 MonoInst *addr = mini_emit_get_gsharedvt_info_klass (cfg, klass, MONO_RGCTX_INFO_NULLABLE_CLASS_UNBOX);
3621                 MonoInst *unbox_call;
3622                 MonoMethodSignature *unbox_sig;
3623
3624                 unbox_sig = (MonoMethodSignature *)mono_mempool_alloc0 (cfg->mempool, MONO_SIZEOF_METHOD_SIGNATURE + (1 * sizeof (MonoType *)));
3625                 unbox_sig->ret = &klass->byval_arg;
3626                 unbox_sig->param_count = 1;
3627                 unbox_sig->params [0] = &mono_defaults.object_class->byval_arg;
3628
3629                 if (cfg->llvm_only)
3630                         unbox_call = emit_llvmonly_calli (cfg, unbox_sig, &obj, addr);
3631                 else
3632                         unbox_call = mini_emit_calli (cfg, unbox_sig, &obj, addr, NULL, NULL);
3633
3634                 EMIT_NEW_VARLOADA_VREG (cfg, addr, unbox_call->dreg, &klass->byval_arg);
3635                 addr->dreg = addr_reg;
3636         }
3637
3638         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
3639
3640         /* End */
3641         MONO_START_BB (cfg, end_bb);
3642
3643         /* LDOBJ */
3644         EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, addr_reg, 0);
3645
3646         return ins;
3647 }
3648
3649 /*
3650  * Returns NULL and set the cfg exception on error.
3651  */
3652 static MonoInst*
3653 handle_alloc (MonoCompile *cfg, MonoClass *klass, gboolean for_box, int context_used)
3654 {
3655         MonoInst *iargs [2];
3656         void *alloc_ftn;
3657
3658         if (context_used) {
3659                 MonoInst *data;
3660                 MonoRgctxInfoType rgctx_info;
3661                 MonoInst *iargs [2];
3662                 gboolean known_instance_size = !mini_is_gsharedvt_klass (klass);
3663
3664                 MonoMethod *managed_alloc = mono_gc_get_managed_allocator (klass, for_box, known_instance_size);
3665
3666                 if (cfg->opt & MONO_OPT_SHARED)
3667                         rgctx_info = MONO_RGCTX_INFO_KLASS;
3668                 else
3669                         rgctx_info = MONO_RGCTX_INFO_VTABLE;
3670                 data = mini_emit_get_rgctx_klass (cfg, context_used, klass, rgctx_info);
3671
3672                 if (cfg->opt & MONO_OPT_SHARED) {
3673                         EMIT_NEW_DOMAINCONST (cfg, iargs [0]);
3674                         iargs [1] = data;
3675                         alloc_ftn = ves_icall_object_new;
3676                 } else {
3677                         iargs [0] = data;
3678                         alloc_ftn = ves_icall_object_new_specific;
3679                 }
3680
3681                 if (managed_alloc && !(cfg->opt & MONO_OPT_SHARED)) {
3682                         if (known_instance_size) {
3683                                 int size = mono_class_instance_size (klass);
3684                                 if (size < sizeof (MonoObject))
3685                                         g_error ("Invalid size %d for class %s", size, mono_type_get_full_name (klass));
3686
3687                                 EMIT_NEW_ICONST (cfg, iargs [1], size);
3688                         }
3689                         return mono_emit_method_call (cfg, managed_alloc, iargs, NULL);
3690                 }
3691
3692                 return mono_emit_jit_icall (cfg, alloc_ftn, iargs);
3693         }
3694
3695         if (cfg->opt & MONO_OPT_SHARED) {
3696                 EMIT_NEW_DOMAINCONST (cfg, iargs [0]);
3697                 EMIT_NEW_CLASSCONST (cfg, iargs [1], klass);
3698
3699                 alloc_ftn = ves_icall_object_new;
3700         } else if (cfg->compile_aot && cfg->cbb->out_of_line && klass->type_token && klass->image == mono_defaults.corlib && !mono_class_is_ginst (klass)) {
3701                 /* This happens often in argument checking code, eg. throw new FooException... */
3702                 /* Avoid relocations and save some space by calling a helper function specialized to mscorlib */
3703                 EMIT_NEW_ICONST (cfg, iargs [0], mono_metadata_token_index (klass->type_token));
3704                 alloc_ftn = mono_helper_newobj_mscorlib;
3705         } else {
3706                 MonoVTable *vtable = mono_class_vtable (cfg->domain, klass);
3707                 MonoMethod *managed_alloc = NULL;
3708
3709                 if (!vtable) {
3710                         mono_cfg_set_exception (cfg, MONO_EXCEPTION_TYPE_LOAD);
3711                         cfg->exception_ptr = klass;
3712                         return NULL;
3713                 }
3714
3715                 managed_alloc = mono_gc_get_managed_allocator (klass, for_box, TRUE);
3716
3717                 if (managed_alloc) {
3718                         int size = mono_class_instance_size (klass);
3719                         if (size < sizeof (MonoObject))
3720                                 g_error ("Invalid size %d for class %s", size, mono_type_get_full_name (klass));
3721
3722                         EMIT_NEW_VTABLECONST (cfg, iargs [0], vtable);
3723                         EMIT_NEW_ICONST (cfg, iargs [1], size);
3724                         return mono_emit_method_call (cfg, managed_alloc, iargs, NULL);
3725                 }
3726                 alloc_ftn = ves_icall_object_new_specific;
3727                 EMIT_NEW_VTABLECONST (cfg, iargs [0], vtable);
3728         }
3729
3730         return mono_emit_jit_icall (cfg, alloc_ftn, iargs);
3731 }
3732
3733 /*
3734  * Returns NULL and set the cfg exception on error.
3735  */
3736 static MonoInst*
3737 handle_box (MonoCompile *cfg, MonoInst *val, MonoClass *klass, int context_used)
3738 {
3739         MonoInst *alloc, *ins;
3740
3741         if (mono_class_is_nullable (klass)) {
3742                 MonoMethod* method = mono_class_get_method_from_name (klass, "Box", 1);
3743
3744                 if (context_used) {
3745                         if (cfg->llvm_only && cfg->gsharedvt) {
3746                                 MonoInst *addr = emit_get_rgctx_method (cfg, context_used, method,
3747                                                                                                                 MONO_RGCTX_INFO_GENERIC_METHOD_CODE);
3748                                 return emit_llvmonly_calli (cfg, mono_method_signature (method), &val, addr);
3749                         } else {
3750                                 /* FIXME: What if the class is shared?  We might not
3751                                    have to get the method address from the RGCTX. */
3752                                 MonoInst *addr = emit_get_rgctx_method (cfg, context_used, method,
3753                                                                                                                 MONO_RGCTX_INFO_GENERIC_METHOD_CODE);
3754                                 MonoInst *rgctx = emit_get_rgctx (cfg, cfg->method, context_used);
3755
3756                                 return mini_emit_calli (cfg, mono_method_signature (method), &val, addr, NULL, rgctx);
3757                         }
3758                 } else {
3759                         gboolean pass_vtable, pass_mrgctx;
3760                         MonoInst *rgctx_arg = NULL;
3761
3762                         check_method_sharing (cfg, method, &pass_vtable, &pass_mrgctx);
3763                         g_assert (!pass_mrgctx);
3764
3765                         if (pass_vtable) {
3766                                 MonoVTable *vtable = mono_class_vtable (cfg->domain, method->klass);
3767
3768                                 g_assert (vtable);
3769                                 EMIT_NEW_VTABLECONST (cfg, rgctx_arg, vtable);
3770                         }
3771
3772                         return mono_emit_method_call_full (cfg, method, NULL, FALSE, &val, NULL, NULL, rgctx_arg);
3773                 }
3774         }
3775
3776         if (mini_is_gsharedvt_klass (klass)) {
3777                 MonoBasicBlock *is_ref_bb, *is_nullable_bb, *end_bb;
3778                 MonoInst *res, *is_ref, *src_var, *addr;
3779                 int dreg;
3780
3781                 dreg = alloc_ireg (cfg);
3782
3783                 NEW_BBLOCK (cfg, is_ref_bb);
3784                 NEW_BBLOCK (cfg, is_nullable_bb);
3785                 NEW_BBLOCK (cfg, end_bb);
3786                 is_ref = mini_emit_get_gsharedvt_info_klass (cfg, klass, MONO_RGCTX_INFO_CLASS_BOX_TYPE);
3787                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, is_ref->dreg, MONO_GSHAREDVT_BOX_TYPE_REF);
3788                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_IBEQ, is_ref_bb);
3789
3790                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, is_ref->dreg, MONO_GSHAREDVT_BOX_TYPE_NULLABLE);
3791                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_IBEQ, is_nullable_bb);
3792
3793                 /* Non-ref case */
3794                 alloc = handle_alloc (cfg, klass, TRUE, context_used);
3795                 if (!alloc)
3796                         return NULL;
3797                 EMIT_NEW_STORE_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, alloc->dreg, sizeof (MonoObject), val->dreg);
3798                 ins->opcode = OP_STOREV_MEMBASE;
3799
3800                 EMIT_NEW_UNALU (cfg, res, OP_MOVE, dreg, alloc->dreg);
3801                 res->type = STACK_OBJ;
3802                 res->klass = klass;
3803                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
3804
3805                 /* Ref case */
3806                 MONO_START_BB (cfg, is_ref_bb);
3807
3808                 /* val is a vtype, so has to load the value manually */
3809                 src_var = get_vreg_to_inst (cfg, val->dreg);
3810                 if (!src_var)
3811                         src_var = mono_compile_create_var_for_vreg (cfg, &klass->byval_arg, OP_LOCAL, val->dreg);
3812                 EMIT_NEW_VARLOADA (cfg, addr, src_var, src_var->inst_vtype);
3813                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, dreg, addr->dreg, 0);
3814                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
3815
3816                 /* Nullable case */
3817                 MONO_START_BB (cfg, is_nullable_bb);
3818
3819                 {
3820                         MonoInst *addr = mini_emit_get_gsharedvt_info_klass (cfg, klass,
3821                                                                                                         MONO_RGCTX_INFO_NULLABLE_CLASS_BOX);
3822                         MonoInst *box_call;
3823                         MonoMethodSignature *box_sig;
3824
3825                         /*
3826                          * klass is Nullable<T>, need to call Nullable<T>.Box () using a gsharedvt signature, but we cannot
3827                          * construct that method at JIT time, so have to do things by hand.
3828                          */
3829                         box_sig = (MonoMethodSignature *)mono_mempool_alloc0 (cfg->mempool, MONO_SIZEOF_METHOD_SIGNATURE + (1 * sizeof (MonoType *)));
3830                         box_sig->ret = &mono_defaults.object_class->byval_arg;
3831                         box_sig->param_count = 1;
3832                         box_sig->params [0] = &klass->byval_arg;
3833
3834                         if (cfg->llvm_only)
3835                                 box_call = emit_llvmonly_calli (cfg, box_sig, &val, addr);
3836                         else
3837                                 box_call = mini_emit_calli (cfg, box_sig, &val, addr, NULL, NULL);
3838                         EMIT_NEW_UNALU (cfg, res, OP_MOVE, dreg, box_call->dreg);
3839                         res->type = STACK_OBJ;
3840                         res->klass = klass;
3841                 }
3842
3843                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
3844
3845                 MONO_START_BB (cfg, end_bb);
3846
3847                 return res;
3848         } else {
3849                 alloc = handle_alloc (cfg, klass, TRUE, context_used);
3850                 if (!alloc)
3851                         return NULL;
3852
3853                 EMIT_NEW_STORE_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, alloc->dreg, sizeof (MonoObject), val->dreg);
3854                 return alloc;
3855         }
3856 }
3857
3858 static GHashTable* direct_icall_type_hash;
3859
3860 static gboolean
3861 icall_is_direct_callable (MonoCompile *cfg, MonoMethod *cmethod)
3862 {
3863         /* LLVM on amd64 can't handle calls to non-32 bit addresses */
3864         if (!direct_icalls_enabled (cfg))
3865                 return FALSE;
3866
3867         /*
3868          * An icall is directly callable if it doesn't directly or indirectly call mono_raise_exception ().
3869          * Whitelist a few icalls for now.
3870          */
3871         if (!direct_icall_type_hash) {
3872                 GHashTable *h = g_hash_table_new (g_str_hash, g_str_equal);
3873
3874                 g_hash_table_insert (h, (char*)"Decimal", GUINT_TO_POINTER (1));
3875                 g_hash_table_insert (h, (char*)"Number", GUINT_TO_POINTER (1));
3876                 g_hash_table_insert (h, (char*)"Buffer", GUINT_TO_POINTER (1));
3877                 g_hash_table_insert (h, (char*)"Monitor", GUINT_TO_POINTER (1));
3878                 mono_memory_barrier ();
3879                 direct_icall_type_hash = h;
3880         }
3881
3882         if (cmethod->klass == mono_defaults.math_class)
3883                 return TRUE;
3884         /* No locking needed */
3885         if (cmethod->klass->image == mono_defaults.corlib && g_hash_table_lookup (direct_icall_type_hash, cmethod->klass->name))
3886                 return TRUE;
3887         return FALSE;
3888 }
3889
3890 static gboolean
3891 method_needs_stack_walk (MonoCompile *cfg, MonoMethod *cmethod)
3892 {
3893         if (cmethod->klass == mono_defaults.systemtype_class) {
3894                 if (!strcmp (cmethod->name, "GetType"))
3895                         return TRUE;
3896         }
3897         return FALSE;
3898 }
3899
3900 static G_GNUC_UNUSED MonoInst*
3901 handle_enum_has_flag (MonoCompile *cfg, MonoClass *klass, MonoInst *enum_this, MonoInst *enum_flag)
3902 {
3903         MonoType *enum_type = mono_type_get_underlying_type (&klass->byval_arg);
3904         guint32 load_opc = mono_type_to_load_membase (cfg, enum_type);
3905         gboolean is_i4;
3906
3907         switch (enum_type->type) {
3908         case MONO_TYPE_I8:
3909         case MONO_TYPE_U8:
3910 #if SIZEOF_REGISTER == 8
3911         case MONO_TYPE_I:
3912         case MONO_TYPE_U:
3913 #endif
3914                 is_i4 = FALSE;
3915                 break;
3916         default:
3917                 is_i4 = TRUE;
3918                 break;
3919         }
3920
3921         {
3922                 MonoInst *load, *and_, *cmp, *ceq;
3923                 int enum_reg = is_i4 ? alloc_ireg (cfg) : alloc_lreg (cfg);
3924                 int and_reg = is_i4 ? alloc_ireg (cfg) : alloc_lreg (cfg);
3925                 int dest_reg = alloc_ireg (cfg);
3926
3927                 EMIT_NEW_LOAD_MEMBASE (cfg, load, load_opc, enum_reg, enum_this->dreg, 0);
3928                 EMIT_NEW_BIALU (cfg, and_, is_i4 ? OP_IAND : OP_LAND, and_reg, enum_reg, enum_flag->dreg);
3929                 EMIT_NEW_BIALU (cfg, cmp, is_i4 ? OP_ICOMPARE : OP_LCOMPARE, -1, and_reg, enum_flag->dreg);
3930                 EMIT_NEW_UNALU (cfg, ceq, is_i4 ? OP_ICEQ : OP_LCEQ, dest_reg, -1);
3931
3932                 ceq->type = STACK_I4;
3933
3934                 if (!is_i4) {
3935                         load = mono_decompose_opcode (cfg, load);
3936                         and_ = mono_decompose_opcode (cfg, and_);
3937                         cmp = mono_decompose_opcode (cfg, cmp);
3938                         ceq = mono_decompose_opcode (cfg, ceq);
3939                 }
3940
3941                 return ceq;
3942         }
3943 }
3944
3945 /*
3946  * Returns NULL and set the cfg exception on error.
3947  */
3948 static G_GNUC_UNUSED MonoInst*
3949 handle_delegate_ctor (MonoCompile *cfg, MonoClass *klass, MonoInst *target, MonoMethod *method, int context_used, gboolean virtual_)
3950 {
3951         MonoInst *ptr;
3952         int dreg;
3953         gpointer trampoline;
3954         MonoInst *obj, *method_ins, *tramp_ins;
3955         MonoDomain *domain;
3956         guint8 **code_slot;
3957
3958         if (virtual_ && !cfg->llvm_only) {
3959                 MonoMethod *invoke = mono_get_delegate_invoke (klass);
3960                 g_assert (invoke);
3961
3962                 if (!mono_get_delegate_virtual_invoke_impl (mono_method_signature (invoke), context_used ? NULL : method))
3963                         return NULL;
3964         }
3965
3966         obj = handle_alloc (cfg, klass, FALSE, mono_class_check_context_used (klass));
3967         if (!obj)
3968                 return NULL;
3969
3970         /* Inline the contents of mono_delegate_ctor */
3971
3972         /* Set target field */
3973         /* Optimize away setting of NULL target */
3974         if (!MONO_INS_IS_PCONST_NULL (target)) {
3975                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, obj->dreg, MONO_STRUCT_OFFSET (MonoDelegate, target), target->dreg);
3976                 if (cfg->gen_write_barriers) {
3977                         dreg = alloc_preg (cfg);
3978                         EMIT_NEW_BIALU_IMM (cfg, ptr, OP_PADD_IMM, dreg, obj->dreg, MONO_STRUCT_OFFSET (MonoDelegate, target));
3979                         mini_emit_write_barrier (cfg, ptr, target);
3980                 }
3981         }
3982
3983         /* Set method field */
3984         method_ins = emit_get_rgctx_method (cfg, context_used, method, MONO_RGCTX_INFO_METHOD);
3985         MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, obj->dreg, MONO_STRUCT_OFFSET (MonoDelegate, method), method_ins->dreg);
3986
3987         /*
3988          * To avoid looking up the compiled code belonging to the target method
3989          * in mono_delegate_trampoline (), we allocate a per-domain memory slot to
3990          * store it, and we fill it after the method has been compiled.
3991          */
3992         if (!method->dynamic && !(cfg->opt & MONO_OPT_SHARED)) {
3993                 MonoInst *code_slot_ins;
3994
3995                 if (context_used) {
3996                         code_slot_ins = emit_get_rgctx_method (cfg, context_used, method, MONO_RGCTX_INFO_METHOD_DELEGATE_CODE);
3997                 } else {
3998                         domain = mono_domain_get ();
3999                         mono_domain_lock (domain);
4000                         if (!domain_jit_info (domain)->method_code_hash)
4001                                 domain_jit_info (domain)->method_code_hash = g_hash_table_new (NULL, NULL);
4002                         code_slot = (guint8 **)g_hash_table_lookup (domain_jit_info (domain)->method_code_hash, method);
4003                         if (!code_slot) {
4004                                 code_slot = (guint8 **)mono_domain_alloc0 (domain, sizeof (gpointer));
4005                                 g_hash_table_insert (domain_jit_info (domain)->method_code_hash, method, code_slot);
4006                         }
4007                         mono_domain_unlock (domain);
4008
4009                         code_slot_ins = mini_emit_runtime_constant (cfg, MONO_PATCH_INFO_METHOD_CODE_SLOT, method);
4010                 }
4011                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, obj->dreg, MONO_STRUCT_OFFSET (MonoDelegate, method_code), code_slot_ins->dreg);
4012         }
4013
4014         if (cfg->llvm_only) {
4015                 MonoInst *args [16];
4016
4017                 if (virtual_) {
4018                         args [0] = obj;
4019                         args [1] = target;
4020                         args [2] = emit_get_rgctx_method (cfg, context_used, method, MONO_RGCTX_INFO_METHOD);
4021                         mono_emit_jit_icall (cfg, mono_llvmonly_init_delegate_virtual, args);
4022                 } else {
4023                         args [0] = obj;
4024                         mono_emit_jit_icall (cfg, mono_llvmonly_init_delegate, args);
4025                 }
4026
4027                 return obj;
4028         }
4029
4030         if (cfg->compile_aot) {
4031                 MonoDelegateClassMethodPair *del_tramp;
4032
4033                 del_tramp = (MonoDelegateClassMethodPair *)mono_mempool_alloc0 (cfg->mempool, sizeof (MonoDelegateClassMethodPair));
4034                 del_tramp->klass = klass;
4035                 del_tramp->method = context_used ? NULL : method;
4036                 del_tramp->is_virtual = virtual_;
4037                 EMIT_NEW_AOTCONST (cfg, tramp_ins, MONO_PATCH_INFO_DELEGATE_TRAMPOLINE, del_tramp);
4038         } else {
4039                 if (virtual_)
4040                         trampoline = mono_create_delegate_virtual_trampoline (cfg->domain, klass, context_used ? NULL : method);
4041                 else
4042                         trampoline = mono_create_delegate_trampoline_info (cfg->domain, klass, context_used ? NULL : method);
4043                 EMIT_NEW_PCONST (cfg, tramp_ins, trampoline);
4044         }
4045
4046         /* Set invoke_impl field */
4047         if (virtual_) {
4048                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, obj->dreg, MONO_STRUCT_OFFSET (MonoDelegate, invoke_impl), tramp_ins->dreg);
4049         } else {
4050                 dreg = alloc_preg (cfg);
4051                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, dreg, tramp_ins->dreg, MONO_STRUCT_OFFSET (MonoDelegateTrampInfo, invoke_impl));
4052                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, obj->dreg, MONO_STRUCT_OFFSET (MonoDelegate, invoke_impl), dreg);
4053
4054                 dreg = alloc_preg (cfg);
4055                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, dreg, tramp_ins->dreg, MONO_STRUCT_OFFSET (MonoDelegateTrampInfo, method_ptr));
4056                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, obj->dreg, MONO_STRUCT_OFFSET (MonoDelegate, method_ptr), dreg);
4057         }
4058
4059         dreg = alloc_preg (cfg);
4060         MONO_EMIT_NEW_ICONST (cfg, dreg, virtual_ ? 1 : 0);
4061         MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREI1_MEMBASE_REG, obj->dreg, MONO_STRUCT_OFFSET (MonoDelegate, method_is_virtual), dreg);
4062
4063         /* All the checks which are in mono_delegate_ctor () are done by the delegate trampoline */
4064
4065         return obj;
4066 }
4067
4068 static MonoInst*
4069 handle_array_new (MonoCompile *cfg, int rank, MonoInst **sp, unsigned char *ip)
4070 {
4071         MonoJitICallInfo *info;
4072
4073         /* Need to register the icall so it gets an icall wrapper */
4074         info = mono_get_array_new_va_icall (rank);
4075
4076         cfg->flags |= MONO_CFG_HAS_VARARGS;
4077
4078         /* mono_array_new_va () needs a vararg calling convention */
4079         cfg->exception_message = g_strdup ("array-new");
4080         cfg->disable_llvm = TRUE;
4081
4082         /* FIXME: This uses info->sig, but it should use the signature of the wrapper */
4083         return mono_emit_native_call (cfg, mono_icall_get_wrapper (info), info->sig, sp);
4084 }
4085
4086 /*
4087  * handle_constrained_gsharedvt_call:
4088  *
4089  *   Handle constrained calls where the receiver is a gsharedvt type.
4090  * Return the instruction representing the call. Set the cfg exception on failure.
4091  */
4092 static MonoInst*
4093 handle_constrained_gsharedvt_call (MonoCompile *cfg, MonoMethod *cmethod, MonoMethodSignature *fsig, MonoInst **sp, MonoClass *constrained_class,
4094                                                                    gboolean *ref_emit_widen)
4095 {
4096         MonoInst *ins = NULL;
4097         gboolean emit_widen = *ref_emit_widen;
4098
4099         /*
4100          * Constrained calls need to behave differently at runtime dependending on whenever the receiver is instantiated as ref type or as a vtype.
4101          * This is hard to do with the current call code, since we would have to emit a branch and two different calls. So instead, we
4102          * pack the arguments into an array, and do the rest of the work in in an icall.
4103          */
4104         if (((cmethod->klass == mono_defaults.object_class) || mono_class_is_interface (cmethod->klass) || (!cmethod->klass->valuetype && cmethod->klass->image != mono_defaults.corlib)) &&
4105                 (MONO_TYPE_IS_VOID (fsig->ret) || MONO_TYPE_IS_PRIMITIVE (fsig->ret) || MONO_TYPE_IS_REFERENCE (fsig->ret) || MONO_TYPE_ISSTRUCT (fsig->ret) || mono_class_is_enum (mono_class_from_mono_type (fsig->ret)) || mini_is_gsharedvt_type (fsig->ret)) &&
4106                 (fsig->param_count == 0 || (!fsig->hasthis && fsig->param_count == 1) || (fsig->param_count == 1 && (MONO_TYPE_IS_REFERENCE (fsig->params [0]) || fsig->params [0]->byref || mini_is_gsharedvt_type (fsig->params [0]))))) {
4107                 MonoInst *args [16];
4108
4109                 /*
4110                  * This case handles calls to
4111                  * - object:ToString()/Equals()/GetHashCode(),
4112                  * - System.IComparable<T>:CompareTo()
4113                  * - System.IEquatable<T>:Equals ()
4114                  * plus some simple interface calls enough to support AsyncTaskMethodBuilder.
4115                  */
4116
4117                 args [0] = sp [0];
4118                 if (mono_method_check_context_used (cmethod))
4119                         args [1] = emit_get_rgctx_method (cfg, mono_method_check_context_used (cmethod), cmethod, MONO_RGCTX_INFO_METHOD);
4120                 else
4121                         EMIT_NEW_METHODCONST (cfg, args [1], cmethod);
4122                 args [2] = mini_emit_get_rgctx_klass (cfg, mono_class_check_context_used (constrained_class), constrained_class, MONO_RGCTX_INFO_KLASS);
4123
4124                 /* !fsig->hasthis is for the wrapper for the Object.GetType () icall */
4125                 if (fsig->hasthis && fsig->param_count) {
4126                         /* Pass the arguments using a localloc-ed array using the format expected by runtime_invoke () */
4127                         MONO_INST_NEW (cfg, ins, OP_LOCALLOC_IMM);
4128                         ins->dreg = alloc_preg (cfg);
4129                         ins->inst_imm = fsig->param_count * sizeof (mgreg_t);
4130                         MONO_ADD_INS (cfg->cbb, ins);
4131                         args [4] = ins;
4132
4133                         if (mini_is_gsharedvt_type (fsig->params [0])) {
4134                                 int addr_reg, deref_arg_reg;
4135
4136                                 ins = mini_emit_get_gsharedvt_info_klass (cfg, mono_class_from_mono_type (fsig->params [0]), MONO_RGCTX_INFO_CLASS_BOX_TYPE);
4137                                 deref_arg_reg = alloc_preg (cfg);
4138                                 /* deref_arg = BOX_TYPE != MONO_GSHAREDVT_BOX_TYPE_VTYPE */
4139                                 EMIT_NEW_BIALU_IMM (cfg, args [3], OP_ISUB_IMM, deref_arg_reg, ins->dreg, 1);
4140
4141                                 EMIT_NEW_VARLOADA_VREG (cfg, ins, sp [1]->dreg, fsig->params [0]);
4142                                 addr_reg = ins->dreg;
4143                                 EMIT_NEW_STORE_MEMBASE (cfg, ins, OP_STORE_MEMBASE_REG, args [4]->dreg, 0, addr_reg);
4144                         } else {
4145                                 EMIT_NEW_ICONST (cfg, args [3], 0);
4146                                 EMIT_NEW_STORE_MEMBASE (cfg, ins, OP_STORE_MEMBASE_REG, args [4]->dreg, 0, sp [1]->dreg);
4147                         }
4148                 } else {
4149                         EMIT_NEW_ICONST (cfg, args [3], 0);
4150                         EMIT_NEW_ICONST (cfg, args [4], 0);
4151                 }
4152                 ins = mono_emit_jit_icall (cfg, mono_gsharedvt_constrained_call, args);
4153                 emit_widen = FALSE;
4154
4155                 if (mini_is_gsharedvt_type (fsig->ret)) {
4156                         ins = handle_unbox_gsharedvt (cfg, mono_class_from_mono_type (fsig->ret), ins);
4157                 } else if (MONO_TYPE_IS_PRIMITIVE (fsig->ret) || MONO_TYPE_ISSTRUCT (fsig->ret) || mono_class_is_enum (mono_class_from_mono_type (fsig->ret))) {
4158                         MonoInst *add;
4159
4160                         /* Unbox */
4161                         NEW_BIALU_IMM (cfg, add, OP_ADD_IMM, alloc_dreg (cfg, STACK_MP), ins->dreg, sizeof (MonoObject));
4162                         MONO_ADD_INS (cfg->cbb, add);
4163                         /* Load value */
4164                         NEW_LOAD_MEMBASE_TYPE (cfg, ins, fsig->ret, add->dreg, 0);
4165                         MONO_ADD_INS (cfg->cbb, ins);
4166                         /* ins represents the call result */
4167                 }
4168         } else {
4169                 GSHAREDVT_FAILURE (CEE_CALLVIRT);
4170         }
4171
4172         *ref_emit_widen = emit_widen;
4173
4174         return ins;
4175
4176  exception_exit:
4177         return NULL;
4178 }
4179
4180 static void
4181 mono_emit_load_got_addr (MonoCompile *cfg)
4182 {
4183         MonoInst *getaddr, *dummy_use;
4184
4185         if (!cfg->got_var || cfg->got_var_allocated)
4186                 return;
4187
4188         MONO_INST_NEW (cfg, getaddr, OP_LOAD_GOTADDR);
4189         getaddr->cil_code = cfg->header->code;
4190         getaddr->dreg = cfg->got_var->dreg;
4191
4192         /* Add it to the start of the first bblock */
4193         if (cfg->bb_entry->code) {
4194                 getaddr->next = cfg->bb_entry->code;
4195                 cfg->bb_entry->code = getaddr;
4196         }
4197         else
4198                 MONO_ADD_INS (cfg->bb_entry, getaddr);
4199
4200         cfg->got_var_allocated = TRUE;
4201
4202         /*
4203          * Add a dummy use to keep the got_var alive, since real uses might
4204          * only be generated by the back ends.
4205          * Add it to end_bblock, so the variable's lifetime covers the whole
4206          * method.
4207          * It would be better to make the usage of the got var explicit in all
4208          * cases when the backend needs it (i.e. calls, throw etc.), so this
4209          * wouldn't be needed.
4210          */
4211         NEW_DUMMY_USE (cfg, dummy_use, cfg->got_var);
4212         MONO_ADD_INS (cfg->bb_exit, dummy_use);
4213 }
4214
4215 static int inline_limit;
4216 static gboolean inline_limit_inited;
4217
4218 static gboolean
4219 mono_method_check_inlining (MonoCompile *cfg, MonoMethod *method)
4220 {
4221         MonoMethodHeaderSummary header;
4222         MonoVTable *vtable;
4223 #ifdef MONO_ARCH_SOFT_FLOAT_FALLBACK
4224         MonoMethodSignature *sig = mono_method_signature (method);
4225         int i;
4226 #endif
4227
4228         if (cfg->disable_inline)
4229                 return FALSE;
4230         if (cfg->gsharedvt)
4231                 return FALSE;
4232
4233         if (cfg->inline_depth > 10)
4234                 return FALSE;
4235
4236         if (!mono_method_get_header_summary (method, &header))
4237                 return FALSE;
4238
4239         /*runtime, icall and pinvoke are checked by summary call*/
4240         if ((method->iflags & METHOD_IMPL_ATTRIBUTE_NOINLINING) ||
4241             (method->iflags & METHOD_IMPL_ATTRIBUTE_SYNCHRONIZED) ||
4242             (mono_class_is_marshalbyref (method->klass)) ||
4243             header.has_clauses)
4244                 return FALSE;
4245
4246         /* also consider num_locals? */
4247         /* Do the size check early to avoid creating vtables */
4248         if (!inline_limit_inited) {
4249                 char *inlinelimit;
4250                 if ((inlinelimit = g_getenv ("MONO_INLINELIMIT"))) {
4251                         inline_limit = atoi (inlinelimit);
4252                         g_free (inlinelimit);
4253                 } else
4254                         inline_limit = INLINE_LENGTH_LIMIT;
4255                 inline_limit_inited = TRUE;
4256         }
4257         if (header.code_size >= inline_limit && !(method->iflags & METHOD_IMPL_ATTRIBUTE_AGGRESSIVE_INLINING))
4258                 return FALSE;
4259
4260         /*
4261          * if we can initialize the class of the method right away, we do,
4262          * otherwise we don't allow inlining if the class needs initialization,
4263          * since it would mean inserting a call to mono_runtime_class_init()
4264          * inside the inlined code
4265          */
4266         if (cfg->gshared && method->klass->has_cctor && mini_class_check_context_used (cfg, method->klass))
4267                 return FALSE;
4268
4269         if (!(cfg->opt & MONO_OPT_SHARED)) {
4270                 /* The AggressiveInlining hint is a good excuse to force that cctor to run. */
4271                 if (method->iflags & METHOD_IMPL_ATTRIBUTE_AGGRESSIVE_INLINING) {
4272                         if (method->klass->has_cctor) {
4273                                 vtable = mono_class_vtable (cfg->domain, method->klass);
4274                                 if (!vtable)
4275                                         return FALSE;
4276                                 if (!cfg->compile_aot) {
4277                                         MonoError error;
4278                                         if (!mono_runtime_class_init_full (vtable, &error)) {
4279                                                 mono_error_cleanup (&error);
4280                                                 return FALSE;
4281                                         }
4282                                 }
4283                         }
4284                 } else if (mono_class_is_before_field_init (method->klass)) {
4285                         if (cfg->run_cctors && method->klass->has_cctor) {
4286                                 /*FIXME it would easier and lazier to just use mono_class_try_get_vtable */
4287                                 if (!method->klass->runtime_info)
4288                                         /* No vtable created yet */
4289                                         return FALSE;
4290                                 vtable = mono_class_vtable (cfg->domain, method->klass);
4291                                 if (!vtable)
4292                                         return FALSE;
4293                                 /* This makes so that inline cannot trigger */
4294                                 /* .cctors: too many apps depend on them */
4295                                 /* running with a specific order... */
4296                                 if (! vtable->initialized)
4297                                         return FALSE;
4298                                 MonoError error;
4299                                 if (!mono_runtime_class_init_full (vtable, &error)) {
4300                                         mono_error_cleanup (&error);
4301                                         return FALSE;
4302                                 }
4303                         }
4304                 } else if (mono_class_needs_cctor_run (method->klass, NULL)) {
4305                         if (!method->klass->runtime_info)
4306                                 /* No vtable created yet */
4307                                 return FALSE;
4308                         vtable = mono_class_vtable (cfg->domain, method->klass);
4309                         if (!vtable)
4310                                 return FALSE;
4311                         if (!vtable->initialized)
4312                                 return FALSE;
4313                 }
4314         } else {
4315                 /*
4316                  * If we're compiling for shared code
4317                  * the cctor will need to be run at aot method load time, for example,
4318                  * or at the end of the compilation of the inlining method.
4319                  */
4320                 if (mono_class_needs_cctor_run (method->klass, NULL) && !mono_class_is_before_field_init (method->klass))
4321                         return FALSE;
4322         }
4323
4324 #ifdef MONO_ARCH_SOFT_FLOAT_FALLBACK
4325         if (mono_arch_is_soft_float ()) {
4326                 /* FIXME: */
4327                 if (sig->ret && sig->ret->type == MONO_TYPE_R4)
4328                         return FALSE;
4329                 for (i = 0; i < sig->param_count; ++i)
4330                         if (!sig->params [i]->byref && sig->params [i]->type == MONO_TYPE_R4)
4331                                 return FALSE;
4332         }
4333 #endif
4334
4335         if (g_list_find (cfg->dont_inline, method))
4336                 return FALSE;
4337
4338         if (mono_profiler_get_call_instrumentation_flags (method))
4339                 return FALSE;
4340
4341         return TRUE;
4342 }
4343
4344 static gboolean
4345 mini_field_access_needs_cctor_run (MonoCompile *cfg, MonoMethod *method, MonoClass *klass, MonoVTable *vtable)
4346 {
4347         if (!cfg->compile_aot) {
4348                 g_assert (vtable);
4349                 if (vtable->initialized)
4350                         return FALSE;
4351         }
4352
4353         if (mono_class_is_before_field_init (klass)) {
4354                 if (cfg->method == method)
4355                         return FALSE;
4356         }
4357
4358         if (!mono_class_needs_cctor_run (klass, method))
4359                 return FALSE;
4360
4361         if (! (method->flags & METHOD_ATTRIBUTE_STATIC) && (klass == method->klass))
4362                 /* The initialization is already done before the method is called */
4363                 return FALSE;
4364
4365         return TRUE;
4366 }
4367
4368 MonoInst*
4369 mini_emit_ldelema_1_ins (MonoCompile *cfg, MonoClass *klass, MonoInst *arr, MonoInst *index, gboolean bcheck)
4370 {
4371         MonoInst *ins;
4372         guint32 size;
4373         int mult_reg, add_reg, array_reg, index_reg, index2_reg;
4374         int context_used;
4375
4376         if (mini_is_gsharedvt_variable_klass (klass)) {
4377                 size = -1;
4378         } else {
4379                 mono_class_init (klass);
4380                 size = mono_class_array_element_size (klass);
4381         }
4382
4383         mult_reg = alloc_preg (cfg);
4384         array_reg = arr->dreg;
4385         index_reg = index->dreg;
4386
4387 #if SIZEOF_REGISTER == 8
4388         /* The array reg is 64 bits but the index reg is only 32 */
4389         if (COMPILE_LLVM (cfg)) {
4390                 /*
4391                  * abcrem can't handle the OP_SEXT_I4, so add this after abcrem,
4392                  * during OP_BOUNDS_CHECK decomposition, and in the implementation
4393                  * of OP_X86_LEA for llvm.
4394                  */
4395                 index2_reg = index_reg;
4396         } else {
4397                 index2_reg = alloc_preg (cfg);
4398                 MONO_EMIT_NEW_UNALU (cfg, OP_SEXT_I4, index2_reg, index_reg);
4399         }
4400 #else
4401         if (index->type == STACK_I8) {
4402                 index2_reg = alloc_preg (cfg);
4403                 MONO_EMIT_NEW_UNALU (cfg, OP_LCONV_TO_I4, index2_reg, index_reg);
4404         } else {
4405                 index2_reg = index_reg;
4406         }
4407 #endif
4408
4409         if (bcheck)
4410                 MONO_EMIT_BOUNDS_CHECK (cfg, array_reg, MonoArray, max_length, index2_reg);
4411
4412 #if defined(TARGET_X86) || defined(TARGET_AMD64)
4413         if (size == 1 || size == 2 || size == 4 || size == 8) {
4414                 static const int fast_log2 [] = { 1, 0, 1, -1, 2, -1, -1, -1, 3 };
4415
4416                 EMIT_NEW_X86_LEA (cfg, ins, array_reg, index2_reg, fast_log2 [size], MONO_STRUCT_OFFSET (MonoArray, vector));
4417                 ins->klass = mono_class_get_element_class (klass);
4418                 ins->type = STACK_MP;
4419
4420                 return ins;
4421         }
4422 #endif
4423
4424         add_reg = alloc_ireg_mp (cfg);
4425
4426         if (size == -1) {
4427                 MonoInst *rgctx_ins;
4428
4429                 /* gsharedvt */
4430                 g_assert (cfg->gshared);
4431                 context_used = mini_class_check_context_used (cfg, klass);
4432                 g_assert (context_used);
4433                 rgctx_ins = mini_emit_get_gsharedvt_info_klass (cfg, klass, MONO_RGCTX_INFO_ARRAY_ELEMENT_SIZE);
4434                 MONO_EMIT_NEW_BIALU (cfg, OP_IMUL, mult_reg, index2_reg, rgctx_ins->dreg);
4435         } else {
4436                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_MUL_IMM, mult_reg, index2_reg, size);
4437         }
4438         MONO_EMIT_NEW_BIALU (cfg, OP_PADD, add_reg, array_reg, mult_reg);
4439         NEW_BIALU_IMM (cfg, ins, OP_PADD_IMM, add_reg, add_reg, MONO_STRUCT_OFFSET (MonoArray, vector));
4440         ins->klass = mono_class_get_element_class (klass);
4441         ins->type = STACK_MP;
4442         MONO_ADD_INS (cfg->cbb, ins);
4443
4444         return ins;
4445 }
4446
4447 static MonoInst*
4448 mini_emit_ldelema_2_ins (MonoCompile *cfg, MonoClass *klass, MonoInst *arr, MonoInst *index_ins1, MonoInst *index_ins2)
4449 {
4450         int bounds_reg = alloc_preg (cfg);
4451         int add_reg = alloc_ireg_mp (cfg);
4452         int mult_reg = alloc_preg (cfg);
4453         int mult2_reg = alloc_preg (cfg);
4454         int low1_reg = alloc_preg (cfg);
4455         int low2_reg = alloc_preg (cfg);
4456         int high1_reg = alloc_preg (cfg);
4457         int high2_reg = alloc_preg (cfg);
4458         int realidx1_reg = alloc_preg (cfg);
4459         int realidx2_reg = alloc_preg (cfg);
4460         int sum_reg = alloc_preg (cfg);
4461         int index1, index2, tmpreg;
4462         MonoInst *ins;
4463         guint32 size;
4464
4465         mono_class_init (klass);
4466         size = mono_class_array_element_size (klass);
4467
4468         index1 = index_ins1->dreg;
4469         index2 = index_ins2->dreg;
4470
4471 #if SIZEOF_REGISTER == 8
4472         /* The array reg is 64 bits but the index reg is only 32 */
4473         if (COMPILE_LLVM (cfg)) {
4474                 /* Not needed */
4475         } else {
4476                 tmpreg = alloc_preg (cfg);
4477                 MONO_EMIT_NEW_UNALU (cfg, OP_SEXT_I4, tmpreg, index1);
4478                 index1 = tmpreg;
4479                 tmpreg = alloc_preg (cfg);
4480                 MONO_EMIT_NEW_UNALU (cfg, OP_SEXT_I4, tmpreg, index2);
4481                 index2 = tmpreg;
4482         }
4483 #else
4484         // FIXME: Do we need to do something here for i8 indexes, like in ldelema_1_ins ?
4485         tmpreg = -1;
4486 #endif
4487
4488         /* range checking */
4489         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, bounds_reg,
4490                                        arr->dreg, MONO_STRUCT_OFFSET (MonoArray, bounds));
4491
4492         MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADI4_MEMBASE, low1_reg,
4493                                        bounds_reg, MONO_STRUCT_OFFSET (MonoArrayBounds, lower_bound));
4494         MONO_EMIT_NEW_BIALU (cfg, OP_PSUB, realidx1_reg, index1, low1_reg);
4495         MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADI4_MEMBASE, high1_reg,
4496                                        bounds_reg, MONO_STRUCT_OFFSET (MonoArrayBounds, length));
4497         MONO_EMIT_NEW_BIALU (cfg, OP_COMPARE, -1, high1_reg, realidx1_reg);
4498         MONO_EMIT_NEW_COND_EXC (cfg, LE_UN, "IndexOutOfRangeException");
4499
4500         MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADI4_MEMBASE, low2_reg,
4501                                        bounds_reg, sizeof (MonoArrayBounds) + MONO_STRUCT_OFFSET (MonoArrayBounds, lower_bound));
4502         MONO_EMIT_NEW_BIALU (cfg, OP_PSUB, realidx2_reg, index2, low2_reg);
4503         MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADI4_MEMBASE, high2_reg,
4504                                        bounds_reg, sizeof (MonoArrayBounds) + MONO_STRUCT_OFFSET (MonoArrayBounds, length));
4505         MONO_EMIT_NEW_BIALU (cfg, OP_COMPARE, -1, high2_reg, realidx2_reg);
4506         MONO_EMIT_NEW_COND_EXC (cfg, LE_UN, "IndexOutOfRangeException");
4507
4508         MONO_EMIT_NEW_BIALU (cfg, OP_PMUL, mult_reg, high2_reg, realidx1_reg);
4509         MONO_EMIT_NEW_BIALU (cfg, OP_PADD, sum_reg, mult_reg, realidx2_reg);
4510         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_PMUL_IMM, mult2_reg, sum_reg, size);
4511         MONO_EMIT_NEW_BIALU (cfg, OP_PADD, add_reg, mult2_reg, arr->dreg);
4512         NEW_BIALU_IMM (cfg, ins, OP_PADD_IMM, add_reg, add_reg, MONO_STRUCT_OFFSET (MonoArray, vector));
4513
4514         ins->type = STACK_MP;
4515         ins->klass = klass;
4516         MONO_ADD_INS (cfg->cbb, ins);
4517
4518         return ins;
4519 }
4520
4521 static MonoInst*
4522 mini_emit_ldelema_ins (MonoCompile *cfg, MonoMethod *cmethod, MonoInst **sp, unsigned char *ip, gboolean is_set)
4523 {
4524         int rank;
4525         MonoInst *addr;
4526         MonoMethod *addr_method;
4527         int element_size;
4528         MonoClass *eclass = cmethod->klass->element_class;
4529
4530         rank = mono_method_signature (cmethod)->param_count - (is_set? 1: 0);
4531
4532         if (rank == 1)
4533                 return mini_emit_ldelema_1_ins (cfg, eclass, sp [0], sp [1], TRUE);
4534
4535         /* emit_ldelema_2 depends on OP_LMUL */
4536         if (!cfg->backend->emulate_mul_div && rank == 2 && (cfg->opt & MONO_OPT_INTRINS) && !mini_is_gsharedvt_variable_klass (eclass)) {
4537                 return mini_emit_ldelema_2_ins (cfg, eclass, sp [0], sp [1], sp [2]);
4538         }
4539
4540         if (mini_is_gsharedvt_variable_klass (eclass))
4541                 element_size = 0;
4542         else
4543                 element_size = mono_class_array_element_size (eclass);
4544         addr_method = mono_marshal_get_array_address (rank, element_size);
4545         addr = mono_emit_method_call (cfg, addr_method, sp, NULL);
4546
4547         return addr;
4548 }
4549
4550 /* optimize the simple GetGenericValueImpl/SetGenericValueImpl generic icalls */
4551 static MonoInst*
4552 emit_array_generic_access (MonoCompile *cfg, MonoMethodSignature *fsig, MonoInst **args, int is_set)
4553 {
4554         MonoInst *addr, *store, *load;
4555         MonoClass *eklass = mono_class_from_mono_type (fsig->params [2]);
4556
4557         /* the bounds check is already done by the callers */
4558         addr = mini_emit_ldelema_1_ins (cfg, eklass, args [0], args [1], FALSE);
4559         if (is_set) {
4560                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, load, &eklass->byval_arg, args [2]->dreg, 0);
4561                 EMIT_NEW_STORE_MEMBASE_TYPE (cfg, store, &eklass->byval_arg, addr->dreg, 0, load->dreg);
4562                 if (mini_type_is_reference (&eklass->byval_arg))
4563                         mini_emit_write_barrier (cfg, addr, load);
4564         } else {
4565                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, load, &eklass->byval_arg, addr->dreg, 0);
4566                 EMIT_NEW_STORE_MEMBASE_TYPE (cfg, store, &eklass->byval_arg, args [2]->dreg, 0, load->dreg);
4567         }
4568         return store;
4569 }
4570
4571
4572 static gboolean
4573 generic_class_is_reference_type (MonoCompile *cfg, MonoClass *klass)
4574 {
4575         return mini_type_is_reference (&klass->byval_arg);
4576 }
4577
4578 static MonoInst*
4579 emit_array_store (MonoCompile *cfg, MonoClass *klass, MonoInst **sp, gboolean safety_checks)
4580 {
4581         if (safety_checks && generic_class_is_reference_type (cfg, klass) &&
4582                 !(MONO_INS_IS_PCONST_NULL (sp [2]))) {
4583                 MonoClass *obj_array = mono_array_class_get_cached (mono_defaults.object_class, 1);
4584                 MonoMethod *helper = mono_marshal_get_virtual_stelemref (obj_array);
4585                 MonoInst *iargs [3];
4586
4587                 if (!helper->slot)
4588                         mono_class_setup_vtable (obj_array);
4589                 g_assert (helper->slot);
4590
4591                 if (sp [0]->type != STACK_OBJ)
4592                         return NULL;
4593                 if (sp [2]->type != STACK_OBJ)
4594                         return NULL;
4595
4596                 iargs [2] = sp [2];
4597                 iargs [1] = sp [1];
4598                 iargs [0] = sp [0];
4599
4600                 return mono_emit_method_call (cfg, helper, iargs, sp [0]);
4601         } else {
4602                 MonoInst *ins;
4603
4604                 if (mini_is_gsharedvt_variable_klass (klass)) {
4605                         MonoInst *addr;
4606
4607                         // FIXME-VT: OP_ICONST optimization
4608                         addr = mini_emit_ldelema_1_ins (cfg, klass, sp [0], sp [1], TRUE);
4609                         EMIT_NEW_STORE_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, addr->dreg, 0, sp [2]->dreg);
4610                         ins->opcode = OP_STOREV_MEMBASE;
4611                 } else if (sp [1]->opcode == OP_ICONST) {
4612                         int array_reg = sp [0]->dreg;
4613                         int index_reg = sp [1]->dreg;
4614                         int offset = (mono_class_array_element_size (klass) * sp [1]->inst_c0) + MONO_STRUCT_OFFSET (MonoArray, vector);
4615
4616                         if (SIZEOF_REGISTER == 8 && COMPILE_LLVM (cfg))
4617                                 MONO_EMIT_NEW_UNALU (cfg, OP_ZEXT_I4, index_reg, index_reg);
4618
4619                         if (safety_checks)
4620                                 MONO_EMIT_BOUNDS_CHECK (cfg, array_reg, MonoArray, max_length, index_reg);
4621                         EMIT_NEW_STORE_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, array_reg, offset, sp [2]->dreg);
4622                 } else {
4623                         MonoInst *addr = mini_emit_ldelema_1_ins (cfg, klass, sp [0], sp [1], safety_checks);
4624                         EMIT_NEW_STORE_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, addr->dreg, 0, sp [2]->dreg);
4625                         if (generic_class_is_reference_type (cfg, klass))
4626                                 mini_emit_write_barrier (cfg, addr, sp [2]);
4627                 }
4628                 return ins;
4629         }
4630 }
4631
4632 static MonoInst*
4633 emit_array_unsafe_access (MonoCompile *cfg, MonoMethodSignature *fsig, MonoInst **args, int is_set)
4634 {
4635         MonoClass *eklass;
4636
4637         if (is_set)
4638                 eklass = mono_class_from_mono_type (fsig->params [2]);
4639         else
4640                 eklass = mono_class_from_mono_type (fsig->ret);
4641
4642         if (is_set) {
4643                 return emit_array_store (cfg, eklass, args, FALSE);
4644         } else {
4645                 MonoInst *ins, *addr = mini_emit_ldelema_1_ins (cfg, eklass, args [0], args [1], FALSE);
4646                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &eklass->byval_arg, addr->dreg, 0);
4647                 return ins;
4648         }
4649 }
4650
4651 static gboolean
4652 is_unsafe_mov_compatible (MonoCompile *cfg, MonoClass *param_klass, MonoClass *return_klass)
4653 {
4654         uint32_t align;
4655         int param_size, return_size;
4656
4657         param_klass = mono_class_from_mono_type (mini_get_underlying_type (&param_klass->byval_arg));
4658         return_klass = mono_class_from_mono_type (mini_get_underlying_type (&return_klass->byval_arg));
4659
4660         if (cfg->verbose_level > 3)
4661                 printf ("[UNSAFE-MOV-INTRISIC] %s <- %s\n", return_klass->name, param_klass->name);
4662
4663         //Don't allow mixing reference types with value types
4664         if (param_klass->valuetype != return_klass->valuetype) {
4665                 if (cfg->verbose_level > 3)
4666                         printf ("[UNSAFE-MOV-INTRISIC]\tone of the args is a valuetype and the other is not\n");
4667                 return FALSE;
4668         }
4669
4670         if (!param_klass->valuetype) {
4671                 if (cfg->verbose_level > 3)
4672                         printf ("[UNSAFE-MOV-INTRISIC]\targs are reference types\n");
4673                 return TRUE;
4674         }
4675
4676         //That are blitable
4677         if (param_klass->has_references || return_klass->has_references)
4678                 return FALSE;
4679
4680         /* Avoid mixing structs and primitive types/enums, they need to be handled differently in the JIT */
4681         if ((MONO_TYPE_ISSTRUCT (&param_klass->byval_arg) && !MONO_TYPE_ISSTRUCT (&return_klass->byval_arg)) ||
4682                 (!MONO_TYPE_ISSTRUCT (&param_klass->byval_arg) && MONO_TYPE_ISSTRUCT (&return_klass->byval_arg))) {
4683                         if (cfg->verbose_level > 3)
4684                                 printf ("[UNSAFE-MOV-INTRISIC]\tmixing structs and scalars\n");
4685                 return FALSE;
4686         }
4687
4688         if (param_klass->byval_arg.type == MONO_TYPE_R4 || param_klass->byval_arg.type == MONO_TYPE_R8 ||
4689                 return_klass->byval_arg.type == MONO_TYPE_R4 || return_klass->byval_arg.type == MONO_TYPE_R8) {
4690                 if (cfg->verbose_level > 3)
4691                         printf ("[UNSAFE-MOV-INTRISIC]\tfloat or double are not supported\n");
4692                 return FALSE;
4693         }
4694
4695         param_size = mono_class_value_size (param_klass, &align);
4696         return_size = mono_class_value_size (return_klass, &align);
4697
4698         //We can do it if sizes match
4699         if (param_size == return_size) {
4700                 if (cfg->verbose_level > 3)
4701                         printf ("[UNSAFE-MOV-INTRISIC]\tsame size\n");
4702                 return TRUE;
4703         }
4704
4705         //No simple way to handle struct if sizes don't match
4706         if (MONO_TYPE_ISSTRUCT (&param_klass->byval_arg)) {
4707                 if (cfg->verbose_level > 3)
4708                         printf ("[UNSAFE-MOV-INTRISIC]\tsize mismatch and type is a struct\n");
4709                 return FALSE;
4710         }
4711
4712         /*
4713          * Same reg size category.
4714          * A quick note on why we don't require widening here.
4715          * The intrinsic is "R Array.UnsafeMov<S,R> (S s)".
4716          *
4717          * Since the source value comes from a function argument, the JIT will already have
4718          * the value in a VREG and performed any widening needed before (say, when loading from a field).
4719          */
4720         if (param_size <= 4 && return_size <= 4) {
4721                 if (cfg->verbose_level > 3)
4722                         printf ("[UNSAFE-MOV-INTRISIC]\tsize mismatch but both are of the same reg class\n");
4723                 return TRUE;
4724         }
4725
4726         return FALSE;
4727 }
4728
4729 static MonoInst*
4730 emit_array_unsafe_mov (MonoCompile *cfg, MonoMethodSignature *fsig, MonoInst **args)
4731 {
4732         MonoClass *param_klass = mono_class_from_mono_type (fsig->params [0]);
4733         MonoClass *return_klass = mono_class_from_mono_type (fsig->ret);
4734
4735         if (mini_is_gsharedvt_variable_type (fsig->ret))
4736                 return NULL;
4737
4738         //Valuetypes that are semantically equivalent or numbers than can be widened to
4739         if (is_unsafe_mov_compatible (cfg, param_klass, return_klass))
4740                 return args [0];
4741
4742         //Arrays of valuetypes that are semantically equivalent
4743         if (param_klass->rank == 1 && return_klass->rank == 1 && is_unsafe_mov_compatible (cfg, param_klass->element_class, return_klass->element_class))
4744                 return args [0];
4745
4746         return NULL;
4747 }
4748
4749 static MonoInst*
4750 mini_emit_inst_for_ctor (MonoCompile *cfg, MonoMethod *cmethod, MonoMethodSignature *fsig, MonoInst **args)
4751 {
4752 #ifdef MONO_ARCH_SIMD_INTRINSICS
4753         MonoInst *ins = NULL;
4754
4755         if (cfg->opt & MONO_OPT_SIMD) {
4756                 ins = mono_emit_simd_intrinsics (cfg, cmethod, fsig, args);
4757                 if (ins)
4758                         return ins;
4759         }
4760 #endif
4761
4762         return mono_emit_native_types_intrinsics (cfg, cmethod, fsig, args);
4763 }
4764
4765 MonoInst*
4766 mini_emit_memory_barrier (MonoCompile *cfg, int kind)
4767 {
4768         MonoInst *ins = NULL;
4769         MONO_INST_NEW (cfg, ins, OP_MEMORY_BARRIER);
4770         MONO_ADD_INS (cfg->cbb, ins);
4771         ins->backend.memory_barrier_kind = kind;
4772
4773         return ins;
4774 }
4775
4776 static MonoInst*
4777 llvm_emit_inst_for_method (MonoCompile *cfg, MonoMethod *cmethod, MonoMethodSignature *fsig, MonoInst **args)
4778 {
4779         MonoInst *ins = NULL;
4780         int opcode = 0;
4781
4782         /* The LLVM backend supports these intrinsics */
4783         if (cmethod->klass == mono_defaults.math_class) {
4784                 if (strcmp (cmethod->name, "Sin") == 0) {
4785                         opcode = OP_SIN;
4786                 } else if (strcmp (cmethod->name, "Cos") == 0) {
4787                         opcode = OP_COS;
4788                 } else if (strcmp (cmethod->name, "Sqrt") == 0) {
4789                         opcode = OP_SQRT;
4790                 } else if (strcmp (cmethod->name, "Abs") == 0 && fsig->params [0]->type == MONO_TYPE_R8) {
4791                         opcode = OP_ABS;
4792                 }
4793
4794                 if (opcode && fsig->param_count == 1) {
4795                         MONO_INST_NEW (cfg, ins, opcode);
4796                         ins->type = STACK_R8;
4797                         ins->dreg = mono_alloc_dreg (cfg, ins->type);
4798                         ins->sreg1 = args [0]->dreg;
4799                         MONO_ADD_INS (cfg->cbb, ins);
4800                 }
4801
4802                 opcode = 0;
4803                 if (cfg->opt & MONO_OPT_CMOV) {
4804                         if (strcmp (cmethod->name, "Min") == 0) {
4805                                 if (fsig->params [0]->type == MONO_TYPE_I4)
4806                                         opcode = OP_IMIN;
4807                                 if (fsig->params [0]->type == MONO_TYPE_U4)
4808                                         opcode = OP_IMIN_UN;
4809                                 else if (fsig->params [0]->type == MONO_TYPE_I8)
4810                                         opcode = OP_LMIN;
4811                                 else if (fsig->params [0]->type == MONO_TYPE_U8)
4812                                         opcode = OP_LMIN_UN;
4813                         } else if (strcmp (cmethod->name, "Max") == 0) {
4814                                 if (fsig->params [0]->type == MONO_TYPE_I4)
4815                                         opcode = OP_IMAX;
4816                                 if (fsig->params [0]->type == MONO_TYPE_U4)
4817                                         opcode = OP_IMAX_UN;
4818                                 else if (fsig->params [0]->type == MONO_TYPE_I8)
4819                                         opcode = OP_LMAX;
4820                                 else if (fsig->params [0]->type == MONO_TYPE_U8)
4821                                         opcode = OP_LMAX_UN;
4822                         }
4823                 }
4824
4825                 if (opcode && fsig->param_count == 2) {
4826                         MONO_INST_NEW (cfg, ins, opcode);
4827                         ins->type = fsig->params [0]->type == MONO_TYPE_I4 ? STACK_I4 : STACK_I8;
4828                         ins->dreg = mono_alloc_dreg (cfg, ins->type);
4829                         ins->sreg1 = args [0]->dreg;
4830                         ins->sreg2 = args [1]->dreg;
4831                         MONO_ADD_INS (cfg->cbb, ins);
4832                 }
4833         }
4834
4835         return ins;
4836 }
4837
4838 static MonoInst*
4839 mini_emit_inst_for_sharable_method (MonoCompile *cfg, MonoMethod *cmethod, MonoMethodSignature *fsig, MonoInst **args)
4840 {
4841         if (cmethod->klass == mono_defaults.array_class) {
4842                 if (strcmp (cmethod->name, "UnsafeStore") == 0)
4843                         return emit_array_unsafe_access (cfg, fsig, args, TRUE);
4844                 else if (strcmp (cmethod->name, "UnsafeLoad") == 0)
4845                         return emit_array_unsafe_access (cfg, fsig, args, FALSE);
4846                 else if (strcmp (cmethod->name, "UnsafeMov") == 0)
4847                         return emit_array_unsafe_mov (cfg, fsig, args);
4848         }
4849
4850         return NULL;
4851 }
4852
4853
4854 static gboolean
4855 mono_type_is_native_blittable (MonoType *t)
4856 {
4857         if (MONO_TYPE_IS_REFERENCE (t))
4858                 return FALSE;
4859
4860         if (MONO_TYPE_IS_PRIMITIVE_SCALAR (t))
4861                 return TRUE;
4862
4863         MonoClass *klass = mono_class_from_mono_type (t);
4864
4865         //MonoClass::blitable depends on mono_class_setup_fields being done.
4866         mono_class_setup_fields (klass);
4867         if (!klass->blittable)
4868                 return FALSE;
4869
4870         // If the native marshal size is different we can't convert PtrToStructure to a type load
4871         if (mono_class_native_size (klass, NULL) != mono_class_value_size (klass, NULL))
4872                 return FALSE;
4873
4874         return TRUE;
4875 }
4876
4877
4878 static MonoInst*
4879 mini_emit_inst_for_method (MonoCompile *cfg, MonoMethod *cmethod, MonoMethodSignature *fsig, MonoInst **args)
4880 {
4881         MonoInst *ins = NULL;
4882         MonoClass *runtime_helpers_class = mono_class_get_runtime_helpers_class ();
4883
4884         if (cmethod->klass == mono_defaults.string_class) {
4885                 if (strcmp (cmethod->name, "get_Chars") == 0 && fsig->param_count + fsig->hasthis == 2) {
4886                         int dreg = alloc_ireg (cfg);
4887                         int index_reg = alloc_preg (cfg);
4888                         int add_reg = alloc_preg (cfg);
4889
4890 #if SIZEOF_REGISTER == 8
4891                         if (COMPILE_LLVM (cfg)) {
4892                                 MONO_EMIT_NEW_UNALU (cfg, OP_ZEXT_I4, index_reg, args [1]->dreg);
4893                         } else {
4894                                 /* The array reg is 64 bits but the index reg is only 32 */
4895                                 MONO_EMIT_NEW_UNALU (cfg, OP_SEXT_I4, index_reg, args [1]->dreg);
4896                         }
4897 #else
4898                         index_reg = args [1]->dreg;
4899 #endif
4900                         MONO_EMIT_BOUNDS_CHECK (cfg, args [0]->dreg, MonoString, length, index_reg);
4901
4902 #if defined(TARGET_X86) || defined(TARGET_AMD64)
4903                         EMIT_NEW_X86_LEA (cfg, ins, args [0]->dreg, index_reg, 1, MONO_STRUCT_OFFSET (MonoString, chars));
4904                         add_reg = ins->dreg;
4905                         EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOADU2_MEMBASE, dreg,
4906                                                                    add_reg, 0);
4907 #else
4908                         int mult_reg = alloc_preg (cfg);
4909                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_SHL_IMM, mult_reg, index_reg, 1);
4910                         MONO_EMIT_NEW_BIALU (cfg, OP_PADD, add_reg, mult_reg, args [0]->dreg);
4911                         EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOADU2_MEMBASE, dreg,
4912                                                                    add_reg, MONO_STRUCT_OFFSET (MonoString, chars));
4913 #endif
4914                         type_from_op (cfg, ins, NULL, NULL);
4915                         return ins;
4916                 } else if (strcmp (cmethod->name, "get_Length") == 0 && fsig->param_count + fsig->hasthis == 1) {
4917                         int dreg = alloc_ireg (cfg);
4918                         /* Decompose later to allow more optimizations */
4919                         EMIT_NEW_UNALU (cfg, ins, OP_STRLEN, dreg, args [0]->dreg);
4920                         ins->type = STACK_I4;
4921                         ins->flags |= MONO_INST_FAULT;
4922                         cfg->cbb->has_array_access = TRUE;
4923                         cfg->flags |= MONO_CFG_HAS_ARRAY_ACCESS;
4924
4925                         return ins;
4926                 } else
4927                         return NULL;
4928         } else if (cmethod->klass == mono_defaults.object_class) {
4929                 if (strcmp (cmethod->name, "GetType") == 0 && fsig->param_count + fsig->hasthis == 1) {
4930                         int dreg = alloc_ireg_ref (cfg);
4931                         int vt_reg = alloc_preg (cfg);
4932                         MONO_EMIT_NEW_LOAD_MEMBASE_FAULT (cfg, vt_reg, args [0]->dreg, MONO_STRUCT_OFFSET (MonoObject, vtable));
4933                         EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOAD_MEMBASE, dreg, vt_reg, MONO_STRUCT_OFFSET (MonoVTable, type));
4934                         type_from_op (cfg, ins, NULL, NULL);
4935
4936                         return ins;
4937                 } else if (!cfg->backend->emulate_mul_div && strcmp (cmethod->name, "InternalGetHashCode") == 0 && fsig->param_count == 1 && !mono_gc_is_moving ()) {
4938                         int dreg = alloc_ireg (cfg);
4939                         int t1 = alloc_ireg (cfg);
4940
4941                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_SHL_IMM, t1, args [0]->dreg, 3);
4942                         EMIT_NEW_BIALU_IMM (cfg, ins, OP_MUL_IMM, dreg, t1, 2654435761u);
4943                         ins->type = STACK_I4;
4944
4945                         return ins;
4946                 } else if (strcmp (cmethod->name, ".ctor") == 0 && fsig->param_count == 0) {
4947                         MONO_INST_NEW (cfg, ins, OP_NOP);
4948                         MONO_ADD_INS (cfg->cbb, ins);
4949                         return ins;
4950                 } else
4951                         return NULL;
4952         } else if (cmethod->klass == mono_defaults.array_class) {
4953                 if (strcmp (cmethod->name, "GetGenericValueImpl") == 0 && fsig->param_count + fsig->hasthis == 3 && !cfg->gsharedvt)
4954                         return emit_array_generic_access (cfg, fsig, args, FALSE);
4955                 else if (strcmp (cmethod->name, "SetGenericValueImpl") == 0 && fsig->param_count + fsig->hasthis == 3 && !cfg->gsharedvt)
4956                         return emit_array_generic_access (cfg, fsig, args, TRUE);
4957
4958 #ifndef MONO_BIG_ARRAYS
4959                 /*
4960                  * This is an inline version of GetLength/GetLowerBound(0) used frequently in
4961                  * Array methods.
4962                  */
4963                 else if (((strcmp (cmethod->name, "GetLength") == 0 && fsig->param_count + fsig->hasthis == 2) ||
4964                          (strcmp (cmethod->name, "GetLowerBound") == 0 && fsig->param_count + fsig->hasthis == 2)) &&
4965                          args [1]->opcode == OP_ICONST && args [1]->inst_c0 == 0) {
4966                         int dreg = alloc_ireg (cfg);
4967                         int bounds_reg = alloc_ireg_mp (cfg);
4968                         MonoBasicBlock *end_bb, *szarray_bb;
4969                         gboolean get_length = strcmp (cmethod->name, "GetLength") == 0;
4970
4971                         NEW_BBLOCK (cfg, end_bb);
4972                         NEW_BBLOCK (cfg, szarray_bb);
4973
4974                         EMIT_NEW_LOAD_MEMBASE_FAULT (cfg, ins, OP_LOAD_MEMBASE, bounds_reg,
4975                                                                                  args [0]->dreg, MONO_STRUCT_OFFSET (MonoArray, bounds));
4976                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, bounds_reg, 0);
4977                         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_IBEQ, szarray_bb);
4978                         /* Non-szarray case */
4979                         if (get_length)
4980                                 EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOADI4_MEMBASE, dreg,
4981                                                                            bounds_reg, MONO_STRUCT_OFFSET (MonoArrayBounds, length));
4982                         else
4983                                 EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOADI4_MEMBASE, dreg,
4984                                                                            bounds_reg, MONO_STRUCT_OFFSET (MonoArrayBounds, lower_bound));
4985                         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
4986                         MONO_START_BB (cfg, szarray_bb);
4987                         /* Szarray case */
4988                         if (get_length)
4989                                 EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOADI4_MEMBASE, dreg,
4990                                                                            args [0]->dreg, MONO_STRUCT_OFFSET (MonoArray, max_length));
4991                         else
4992                                 MONO_EMIT_NEW_ICONST (cfg, dreg, 0);
4993                         MONO_START_BB (cfg, end_bb);
4994
4995                         EMIT_NEW_UNALU (cfg, ins, OP_MOVE, dreg, dreg);
4996                         ins->type = STACK_I4;
4997
4998                         return ins;
4999                 }
5000 #endif
5001
5002                 if (cmethod->name [0] != 'g')
5003                         return NULL;
5004
5005                 if (strcmp (cmethod->name, "get_Rank") == 0 && fsig->param_count + fsig->hasthis == 1) {
5006                         int dreg = alloc_ireg (cfg);
5007                         int vtable_reg = alloc_preg (cfg);
5008                         MONO_EMIT_NEW_LOAD_MEMBASE_OP_FAULT (cfg, OP_LOAD_MEMBASE, vtable_reg,
5009                                                                                                  args [0]->dreg, MONO_STRUCT_OFFSET (MonoObject, vtable));
5010                         EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOADU1_MEMBASE, dreg,
5011                                                                    vtable_reg, MONO_STRUCT_OFFSET (MonoVTable, rank));
5012                         type_from_op (cfg, ins, NULL, NULL);
5013
5014                         return ins;
5015                 } else if (strcmp (cmethod->name, "get_Length") == 0 && fsig->param_count + fsig->hasthis == 1) {
5016                         int dreg = alloc_ireg (cfg);
5017
5018                         EMIT_NEW_LOAD_MEMBASE_FAULT (cfg, ins, OP_LOADI4_MEMBASE, dreg,
5019                                                                                  args [0]->dreg, MONO_STRUCT_OFFSET (MonoArray, max_length));
5020                         type_from_op (cfg, ins, NULL, NULL);
5021
5022                         return ins;
5023                 } else
5024                         return NULL;
5025         } else if (cmethod->klass == runtime_helpers_class) {
5026                 if (strcmp (cmethod->name, "get_OffsetToStringData") == 0 && fsig->param_count == 0) {
5027                         EMIT_NEW_ICONST (cfg, ins, MONO_STRUCT_OFFSET (MonoString, chars));
5028                         return ins;
5029                 } else if (strcmp (cmethod->name, "IsReferenceOrContainsReferences") == 0 && fsig->param_count == 0) {
5030                         MonoGenericContext *ctx = mono_method_get_context (cmethod);
5031                         g_assert (ctx);
5032                         g_assert (ctx->method_inst);
5033                         g_assert (ctx->method_inst->type_argc == 1);
5034                         MonoType *arg_type = ctx->method_inst->type_argv [0];
5035                         MonoType *t;
5036                         MonoClass *klass;
5037
5038                         ins = NULL;
5039
5040                         /* Resolve the argument class as possible so we can handle common cases fast */
5041                         t = mini_get_underlying_type (arg_type);
5042                         klass = mono_class_from_mono_type (t);
5043                         mono_class_init (klass);
5044                         if (MONO_TYPE_IS_REFERENCE (t))
5045                                 EMIT_NEW_ICONST (cfg, ins, 1);
5046                         else if (MONO_TYPE_IS_PRIMITIVE (t))
5047                                 EMIT_NEW_ICONST (cfg, ins, 0);
5048                         else if (cfg->gshared && (t->type == MONO_TYPE_VAR || t->type == MONO_TYPE_MVAR) && !mini_type_var_is_vt (t))
5049                                 EMIT_NEW_ICONST (cfg, ins, 1);
5050                         else if (!cfg->gshared || !mini_class_check_context_used (cfg, klass))
5051                                 EMIT_NEW_ICONST (cfg, ins, klass->has_references ? 1 : 0);
5052                         else {
5053                                 g_assert (cfg->gshared);
5054
5055                                 /* Have to use the original argument class here */
5056                                 MonoClass *arg_class = mono_class_from_mono_type (arg_type);
5057                                 int context_used = mini_class_check_context_used (cfg, arg_class);
5058
5059                                 /* This returns 1 or 2 */
5060                                 MonoInst *info = mini_emit_get_rgctx_klass (cfg, context_used, arg_class, MONO_RGCTX_INFO_CLASS_IS_REF_OR_CONTAINS_REFS);
5061                                 int dreg = alloc_ireg (cfg);
5062                                 EMIT_NEW_BIALU_IMM (cfg, ins, OP_ISUB_IMM, dreg, info->dreg, 1);
5063                         }
5064
5065                         return ins;
5066                 } else
5067                         return NULL;
5068         } else if (cmethod->klass == mono_defaults.monitor_class) {
5069                 gboolean is_enter = FALSE;
5070                 gboolean is_v4 = FALSE;
5071
5072                 if (!strcmp (cmethod->name, "Enter") && fsig->param_count == 2 && fsig->params [1]->byref) {
5073                         is_enter = TRUE;
5074                         is_v4 = TRUE;
5075                 }
5076                 if (!strcmp (cmethod->name, "Enter") && fsig->param_count == 1)
5077                         is_enter = TRUE;
5078
5079                 if (is_enter) {
5080                         /*
5081                          * To make async stack traces work, icalls which can block should have a wrapper.
5082                          * For Monitor.Enter, emit two calls: a fastpath which doesn't have a wrapper, and a slowpath, which does.
5083                          */
5084                         MonoBasicBlock *end_bb;
5085
5086                         NEW_BBLOCK (cfg, end_bb);
5087
5088                         ins = mono_emit_jit_icall (cfg, is_v4 ? (gpointer)mono_monitor_enter_v4_fast : (gpointer)mono_monitor_enter_fast, args);
5089                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_ICOMPARE_IMM, -1, ins->dreg, 0);
5090                         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_IBNE_UN, end_bb);
5091                         ins = mono_emit_jit_icall (cfg, is_v4 ? (gpointer)mono_monitor_enter_v4_internal : (gpointer)mono_monitor_enter_internal, args);
5092                         MONO_START_BB (cfg, end_bb);
5093                         return ins;
5094                 }
5095         } else if (cmethod->klass == mono_defaults.thread_class) {
5096                 if (strcmp (cmethod->name, "SpinWait_nop") == 0 && fsig->param_count == 0) {
5097                         MONO_INST_NEW (cfg, ins, OP_RELAXED_NOP);
5098                         MONO_ADD_INS (cfg->cbb, ins);
5099                         return ins;
5100                 } else if (strcmp (cmethod->name, "MemoryBarrier") == 0 && fsig->param_count == 0) {
5101                         return mini_emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_SEQ);
5102                 } else if (!strcmp (cmethod->name, "VolatileRead") && fsig->param_count == 1) {
5103                         guint32 opcode = 0;
5104                         gboolean is_ref = mini_type_is_reference (fsig->params [0]);
5105
5106                         if (fsig->params [0]->type == MONO_TYPE_I1)
5107                                 opcode = OP_LOADI1_MEMBASE;
5108                         else if (fsig->params [0]->type == MONO_TYPE_U1)
5109                                 opcode = OP_LOADU1_MEMBASE;
5110                         else if (fsig->params [0]->type == MONO_TYPE_I2)
5111                                 opcode = OP_LOADI2_MEMBASE;
5112                         else if (fsig->params [0]->type == MONO_TYPE_U2)
5113                                 opcode = OP_LOADU2_MEMBASE;
5114                         else if (fsig->params [0]->type == MONO_TYPE_I4)
5115                                 opcode = OP_LOADI4_MEMBASE;
5116                         else if (fsig->params [0]->type == MONO_TYPE_U4)
5117                                 opcode = OP_LOADU4_MEMBASE;
5118                         else if (fsig->params [0]->type == MONO_TYPE_I8 || fsig->params [0]->type == MONO_TYPE_U8)
5119                                 opcode = OP_LOADI8_MEMBASE;
5120                         else if (fsig->params [0]->type == MONO_TYPE_R4)
5121                                 opcode = OP_LOADR4_MEMBASE;
5122                         else if (fsig->params [0]->type == MONO_TYPE_R8)
5123                                 opcode = OP_LOADR8_MEMBASE;
5124                         else if (is_ref || fsig->params [0]->type == MONO_TYPE_I || fsig->params [0]->type == MONO_TYPE_U)
5125                                 opcode = OP_LOAD_MEMBASE;
5126
5127                         if (opcode) {
5128                                 MONO_INST_NEW (cfg, ins, opcode);
5129                                 ins->inst_basereg = args [0]->dreg;
5130                                 ins->inst_offset = 0;
5131                                 MONO_ADD_INS (cfg->cbb, ins);
5132
5133                                 switch (fsig->params [0]->type) {
5134                                 case MONO_TYPE_I1:
5135                                 case MONO_TYPE_U1:
5136                                 case MONO_TYPE_I2:
5137                                 case MONO_TYPE_U2:
5138                                 case MONO_TYPE_I4:
5139                                 case MONO_TYPE_U4:
5140                                         ins->dreg = mono_alloc_ireg (cfg);
5141                                         ins->type = STACK_I4;
5142                                         break;
5143                                 case MONO_TYPE_I8:
5144                                 case MONO_TYPE_U8:
5145                                         ins->dreg = mono_alloc_lreg (cfg);
5146                                         ins->type = STACK_I8;
5147                                         break;
5148                                 case MONO_TYPE_I:
5149                                 case MONO_TYPE_U:
5150                                         ins->dreg = mono_alloc_ireg (cfg);
5151 #if SIZEOF_REGISTER == 8
5152                                         ins->type = STACK_I8;
5153 #else
5154                                         ins->type = STACK_I4;
5155 #endif
5156                                         break;
5157                                 case MONO_TYPE_R4:
5158                                 case MONO_TYPE_R8:
5159                                         ins->dreg = mono_alloc_freg (cfg);
5160                                         ins->type = STACK_R8;
5161                                         break;
5162                                 default:
5163                                         g_assert (mini_type_is_reference (fsig->params [0]));
5164                                         ins->dreg = mono_alloc_ireg_ref (cfg);
5165                                         ins->type = STACK_OBJ;
5166                                         break;
5167                                 }
5168
5169                                 if (opcode == OP_LOADI8_MEMBASE)
5170                                         ins = mono_decompose_opcode (cfg, ins);
5171
5172                                 mini_emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_SEQ);
5173
5174                                 return ins;
5175                         }
5176                 } else if (!strcmp (cmethod->name, "VolatileWrite") && fsig->param_count == 2) {
5177                         guint32 opcode = 0;
5178                         gboolean is_ref = mini_type_is_reference (fsig->params [0]);
5179
5180                         if (fsig->params [0]->type == MONO_TYPE_I1 || fsig->params [0]->type == MONO_TYPE_U1)
5181                                 opcode = OP_STOREI1_MEMBASE_REG;
5182                         else if (fsig->params [0]->type == MONO_TYPE_I2 || fsig->params [0]->type == MONO_TYPE_U2)
5183                                 opcode = OP_STOREI2_MEMBASE_REG;
5184                         else if (fsig->params [0]->type == MONO_TYPE_I4 || fsig->params [0]->type == MONO_TYPE_U4)
5185                                 opcode = OP_STOREI4_MEMBASE_REG;
5186                         else if (fsig->params [0]->type == MONO_TYPE_I8 || fsig->params [0]->type == MONO_TYPE_U8)
5187                                 opcode = OP_STOREI8_MEMBASE_REG;
5188                         else if (fsig->params [0]->type == MONO_TYPE_R4)
5189                                 opcode = OP_STORER4_MEMBASE_REG;
5190                         else if (fsig->params [0]->type == MONO_TYPE_R8)
5191                                 opcode = OP_STORER8_MEMBASE_REG;
5192                         else if (is_ref || fsig->params [0]->type == MONO_TYPE_I || fsig->params [0]->type == MONO_TYPE_U)
5193                                 opcode = OP_STORE_MEMBASE_REG;
5194
5195                         if (opcode) {
5196                                 mini_emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_SEQ);
5197
5198                                 MONO_INST_NEW (cfg, ins, opcode);
5199                                 ins->sreg1 = args [1]->dreg;
5200                                 ins->inst_destbasereg = args [0]->dreg;
5201                                 ins->inst_offset = 0;
5202                                 MONO_ADD_INS (cfg->cbb, ins);
5203
5204                                 if (opcode == OP_STOREI8_MEMBASE_REG)
5205                                         ins = mono_decompose_opcode (cfg, ins);
5206
5207                                 return ins;
5208                         }
5209                 }
5210         } else if (cmethod->klass->image == mono_defaults.corlib &&
5211                            (strcmp (cmethod->klass->name_space, "System.Threading") == 0) &&
5212                            (strcmp (cmethod->klass->name, "Interlocked") == 0)) {
5213                 ins = NULL;
5214
5215 #if SIZEOF_REGISTER == 8
5216                 if (!cfg->llvm_only && strcmp (cmethod->name, "Read") == 0 && fsig->param_count == 1 && (fsig->params [0]->type == MONO_TYPE_I8)) {
5217                         if (!cfg->llvm_only && mono_arch_opcode_supported (OP_ATOMIC_LOAD_I8)) {
5218                                 MONO_INST_NEW (cfg, ins, OP_ATOMIC_LOAD_I8);
5219                                 ins->dreg = mono_alloc_preg (cfg);
5220                                 ins->sreg1 = args [0]->dreg;
5221                                 ins->type = STACK_I8;
5222                                 ins->backend.memory_barrier_kind = MONO_MEMORY_BARRIER_SEQ;
5223                                 MONO_ADD_INS (cfg->cbb, ins);
5224                         } else {
5225                                 MonoInst *load_ins;
5226
5227                                 mini_emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_SEQ);
5228
5229                                 /* 64 bit reads are already atomic */
5230                                 MONO_INST_NEW (cfg, load_ins, OP_LOADI8_MEMBASE);
5231                                 load_ins->dreg = mono_alloc_preg (cfg);
5232                                 load_ins->inst_basereg = args [0]->dreg;
5233                                 load_ins->inst_offset = 0;
5234                                 load_ins->type = STACK_I8;
5235                                 MONO_ADD_INS (cfg->cbb, load_ins);
5236
5237                                 mini_emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_SEQ);
5238
5239                                 ins = load_ins;
5240                         }
5241                 }
5242 #endif
5243
5244                 if (strcmp (cmethod->name, "Increment") == 0 && fsig->param_count == 1) {
5245                         MonoInst *ins_iconst;
5246                         guint32 opcode = 0;
5247
5248                         if (fsig->params [0]->type == MONO_TYPE_I4) {
5249                                 opcode = OP_ATOMIC_ADD_I4;
5250                                 cfg->has_atomic_add_i4 = TRUE;
5251                         }
5252 #if SIZEOF_REGISTER == 8
5253                         else if (fsig->params [0]->type == MONO_TYPE_I8)
5254                                 opcode = OP_ATOMIC_ADD_I8;
5255 #endif
5256                         if (opcode) {
5257                                 if (!mono_arch_opcode_supported (opcode))
5258                                         return NULL;
5259                                 MONO_INST_NEW (cfg, ins_iconst, OP_ICONST);
5260                                 ins_iconst->inst_c0 = 1;
5261                                 ins_iconst->dreg = mono_alloc_ireg (cfg);
5262                                 MONO_ADD_INS (cfg->cbb, ins_iconst);
5263
5264                                 MONO_INST_NEW (cfg, ins, opcode);
5265                                 ins->dreg = mono_alloc_ireg (cfg);
5266                                 ins->inst_basereg = args [0]->dreg;
5267                                 ins->inst_offset = 0;
5268                                 ins->sreg2 = ins_iconst->dreg;
5269                                 ins->type = (opcode == OP_ATOMIC_ADD_I4) ? STACK_I4 : STACK_I8;
5270                                 MONO_ADD_INS (cfg->cbb, ins);
5271                         }
5272                 } else if (strcmp (cmethod->name, "Decrement") == 0 && fsig->param_count == 1) {
5273                         MonoInst *ins_iconst;
5274                         guint32 opcode = 0;
5275
5276                         if (fsig->params [0]->type == MONO_TYPE_I4) {
5277                                 opcode = OP_ATOMIC_ADD_I4;
5278                                 cfg->has_atomic_add_i4 = TRUE;
5279                         }
5280 #if SIZEOF_REGISTER == 8
5281                         else if (fsig->params [0]->type == MONO_TYPE_I8)
5282                                 opcode = OP_ATOMIC_ADD_I8;
5283 #endif
5284                         if (opcode) {
5285                                 if (!mono_arch_opcode_supported (opcode))
5286                                         return NULL;
5287                                 MONO_INST_NEW (cfg, ins_iconst, OP_ICONST);
5288                                 ins_iconst->inst_c0 = -1;
5289                                 ins_iconst->dreg = mono_alloc_ireg (cfg);
5290                                 MONO_ADD_INS (cfg->cbb, ins_iconst);
5291
5292                                 MONO_INST_NEW (cfg, ins, opcode);
5293                                 ins->dreg = mono_alloc_ireg (cfg);
5294                                 ins->inst_basereg = args [0]->dreg;
5295                                 ins->inst_offset = 0;
5296                                 ins->sreg2 = ins_iconst->dreg;
5297                                 ins->type = (opcode == OP_ATOMIC_ADD_I4) ? STACK_I4 : STACK_I8;
5298                                 MONO_ADD_INS (cfg->cbb, ins);
5299                         }
5300                 } else if (strcmp (cmethod->name, "Add") == 0 && fsig->param_count == 2) {
5301                         guint32 opcode = 0;
5302
5303                         if (fsig->params [0]->type == MONO_TYPE_I4) {
5304                                 opcode = OP_ATOMIC_ADD_I4;
5305                                 cfg->has_atomic_add_i4 = TRUE;
5306                         }
5307 #if SIZEOF_REGISTER == 8
5308                         else if (fsig->params [0]->type == MONO_TYPE_I8)
5309                                 opcode = OP_ATOMIC_ADD_I8;
5310 #endif
5311                         if (opcode) {
5312                                 if (!mono_arch_opcode_supported (opcode))
5313                                         return NULL;
5314                                 MONO_INST_NEW (cfg, ins, opcode);
5315                                 ins->dreg = mono_alloc_ireg (cfg);
5316                                 ins->inst_basereg = args [0]->dreg;
5317                                 ins->inst_offset = 0;
5318                                 ins->sreg2 = args [1]->dreg;
5319                                 ins->type = (opcode == OP_ATOMIC_ADD_I4) ? STACK_I4 : STACK_I8;
5320                                 MONO_ADD_INS (cfg->cbb, ins);
5321                         }
5322                 }
5323                 else if (strcmp (cmethod->name, "Exchange") == 0 && fsig->param_count == 2) {
5324                         MonoInst *f2i = NULL, *i2f;
5325                         guint32 opcode, f2i_opcode, i2f_opcode;
5326                         gboolean is_ref = mini_type_is_reference (fsig->params [0]);
5327                         gboolean is_float = fsig->params [0]->type == MONO_TYPE_R4 || fsig->params [0]->type == MONO_TYPE_R8;
5328
5329                         if (fsig->params [0]->type == MONO_TYPE_I4 ||
5330                             fsig->params [0]->type == MONO_TYPE_R4) {
5331                                 opcode = OP_ATOMIC_EXCHANGE_I4;
5332                                 f2i_opcode = OP_MOVE_F_TO_I4;
5333                                 i2f_opcode = OP_MOVE_I4_TO_F;
5334                                 cfg->has_atomic_exchange_i4 = TRUE;
5335                         }
5336 #if SIZEOF_REGISTER == 8
5337                         else if (is_ref ||
5338                                  fsig->params [0]->type == MONO_TYPE_I8 ||
5339                                  fsig->params [0]->type == MONO_TYPE_R8 ||
5340                                  fsig->params [0]->type == MONO_TYPE_I) {
5341                                 opcode = OP_ATOMIC_EXCHANGE_I8;
5342                                 f2i_opcode = OP_MOVE_F_TO_I8;
5343                                 i2f_opcode = OP_MOVE_I8_TO_F;
5344                         }
5345 #else
5346                         else if (is_ref || fsig->params [0]->type == MONO_TYPE_I) {
5347                                 opcode = OP_ATOMIC_EXCHANGE_I4;
5348                                 cfg->has_atomic_exchange_i4 = TRUE;
5349                         }
5350 #endif
5351                         else
5352                                 return NULL;
5353
5354                         if (!mono_arch_opcode_supported (opcode))
5355                                 return NULL;
5356
5357                         if (is_float) {
5358                                 /* TODO: Decompose these opcodes instead of bailing here. */
5359                                 if (COMPILE_SOFT_FLOAT (cfg))
5360                                         return NULL;
5361
5362                                 MONO_INST_NEW (cfg, f2i, f2i_opcode);
5363                                 f2i->dreg = mono_alloc_ireg (cfg);
5364                                 f2i->sreg1 = args [1]->dreg;
5365                                 if (f2i_opcode == OP_MOVE_F_TO_I4)
5366                                         f2i->backend.spill_var = mini_get_int_to_float_spill_area (cfg);
5367                                 MONO_ADD_INS (cfg->cbb, f2i);
5368                         }
5369
5370                         MONO_INST_NEW (cfg, ins, opcode);
5371                         ins->dreg = is_ref ? mono_alloc_ireg_ref (cfg) : mono_alloc_ireg (cfg);
5372                         ins->inst_basereg = args [0]->dreg;
5373                         ins->inst_offset = 0;
5374                         ins->sreg2 = is_float ? f2i->dreg : args [1]->dreg;
5375                         MONO_ADD_INS (cfg->cbb, ins);
5376
5377                         switch (fsig->params [0]->type) {
5378                         case MONO_TYPE_I4:
5379                                 ins->type = STACK_I4;
5380                                 break;
5381                         case MONO_TYPE_I8:
5382                                 ins->type = STACK_I8;
5383                                 break;
5384                         case MONO_TYPE_I:
5385 #if SIZEOF_REGISTER == 8
5386                                 ins->type = STACK_I8;
5387 #else
5388                                 ins->type = STACK_I4;
5389 #endif
5390                                 break;
5391                         case MONO_TYPE_R4:
5392                         case MONO_TYPE_R8:
5393                                 ins->type = STACK_R8;
5394                                 break;
5395                         default:
5396                                 g_assert (mini_type_is_reference (fsig->params [0]));
5397                                 ins->type = STACK_OBJ;
5398                                 break;
5399                         }
5400
5401                         if (is_float) {
5402                                 MONO_INST_NEW (cfg, i2f, i2f_opcode);
5403                                 i2f->dreg = mono_alloc_freg (cfg);
5404                                 i2f->sreg1 = ins->dreg;
5405                                 i2f->type = STACK_R8;
5406                                 if (i2f_opcode == OP_MOVE_I4_TO_F)
5407                                         i2f->backend.spill_var = mini_get_int_to_float_spill_area (cfg);
5408                                 MONO_ADD_INS (cfg->cbb, i2f);
5409
5410                                 ins = i2f;
5411                         }
5412
5413                         if (cfg->gen_write_barriers && is_ref)
5414                                 mini_emit_write_barrier (cfg, args [0], args [1]);
5415                 }
5416                 else if ((strcmp (cmethod->name, "CompareExchange") == 0) && fsig->param_count == 3) {
5417                         MonoInst *f2i_new = NULL, *f2i_cmp = NULL, *i2f;
5418                         guint32 opcode, f2i_opcode, i2f_opcode;
5419                         gboolean is_ref = mini_type_is_reference (fsig->params [1]);
5420                         gboolean is_float = fsig->params [1]->type == MONO_TYPE_R4 || fsig->params [1]->type == MONO_TYPE_R8;
5421
5422                         if (fsig->params [1]->type == MONO_TYPE_I4 ||
5423                             fsig->params [1]->type == MONO_TYPE_R4) {
5424                                 opcode = OP_ATOMIC_CAS_I4;
5425                                 f2i_opcode = OP_MOVE_F_TO_I4;
5426                                 i2f_opcode = OP_MOVE_I4_TO_F;
5427                                 cfg->has_atomic_cas_i4 = TRUE;
5428                         }
5429 #if SIZEOF_REGISTER == 8
5430                         else if (is_ref ||
5431                                  fsig->params [1]->type == MONO_TYPE_I8 ||
5432                                  fsig->params [1]->type == MONO_TYPE_R8 ||
5433                                  fsig->params [1]->type == MONO_TYPE_I) {
5434                                 opcode = OP_ATOMIC_CAS_I8;
5435                                 f2i_opcode = OP_MOVE_F_TO_I8;
5436                                 i2f_opcode = OP_MOVE_I8_TO_F;
5437                         }
5438 #else
5439                         else if (is_ref || fsig->params [1]->type == MONO_TYPE_I) {
5440                                 opcode = OP_ATOMIC_CAS_I4;
5441                                 cfg->has_atomic_cas_i4 = TRUE;
5442                         }
5443 #endif
5444                         else
5445                                 return NULL;
5446
5447                         if (!mono_arch_opcode_supported (opcode))
5448                                 return NULL;
5449
5450                         if (is_float) {
5451                                 /* TODO: Decompose these opcodes instead of bailing here. */
5452                                 if (COMPILE_SOFT_FLOAT (cfg))
5453                                         return NULL;
5454
5455                                 MONO_INST_NEW (cfg, f2i_new, f2i_opcode);
5456                                 f2i_new->dreg = mono_alloc_ireg (cfg);
5457                                 f2i_new->sreg1 = args [1]->dreg;
5458                                 if (f2i_opcode == OP_MOVE_F_TO_I4)
5459                                         f2i_new->backend.spill_var = mini_get_int_to_float_spill_area (cfg);
5460                                 MONO_ADD_INS (cfg->cbb, f2i_new);
5461
5462                                 MONO_INST_NEW (cfg, f2i_cmp, f2i_opcode);
5463                                 f2i_cmp->dreg = mono_alloc_ireg (cfg);
5464                                 f2i_cmp->sreg1 = args [2]->dreg;
5465                                 if (f2i_opcode == OP_MOVE_F_TO_I4)
5466                                         f2i_cmp->backend.spill_var = mini_get_int_to_float_spill_area (cfg);
5467                                 MONO_ADD_INS (cfg->cbb, f2i_cmp);
5468                         }
5469
5470                         MONO_INST_NEW (cfg, ins, opcode);
5471                         ins->dreg = is_ref ? alloc_ireg_ref (cfg) : alloc_ireg (cfg);
5472                         ins->sreg1 = args [0]->dreg;
5473                         ins->sreg2 = is_float ? f2i_new->dreg : args [1]->dreg;
5474                         ins->sreg3 = is_float ? f2i_cmp->dreg : args [2]->dreg;
5475                         MONO_ADD_INS (cfg->cbb, ins);
5476
5477                         switch (fsig->params [1]->type) {
5478                         case MONO_TYPE_I4:
5479                                 ins->type = STACK_I4;
5480                                 break;
5481                         case MONO_TYPE_I8:
5482                                 ins->type = STACK_I8;
5483                                 break;
5484                         case MONO_TYPE_I:
5485 #if SIZEOF_REGISTER == 8
5486                                 ins->type = STACK_I8;
5487 #else
5488                                 ins->type = STACK_I4;
5489 #endif
5490                                 break;
5491                         case MONO_TYPE_R4:
5492                                 ins->type = cfg->r4_stack_type;
5493                                 break;
5494                         case MONO_TYPE_R8:
5495                                 ins->type = STACK_R8;
5496                                 break;
5497                         default:
5498                                 g_assert (mini_type_is_reference (fsig->params [1]));
5499                                 ins->type = STACK_OBJ;
5500                                 break;
5501                         }
5502
5503                         if (is_float) {
5504                                 MONO_INST_NEW (cfg, i2f, i2f_opcode);
5505                                 i2f->dreg = mono_alloc_freg (cfg);
5506                                 i2f->sreg1 = ins->dreg;
5507                                 i2f->type = STACK_R8;
5508                                 if (i2f_opcode == OP_MOVE_I4_TO_F)
5509                                         i2f->backend.spill_var = mini_get_int_to_float_spill_area (cfg);
5510                                 MONO_ADD_INS (cfg->cbb, i2f);
5511
5512                                 ins = i2f;
5513                         }
5514
5515                         if (cfg->gen_write_barriers && is_ref)
5516                                 mini_emit_write_barrier (cfg, args [0], args [1]);
5517                 }
5518                 else if ((strcmp (cmethod->name, "CompareExchange") == 0) && fsig->param_count == 4 &&
5519                          fsig->params [1]->type == MONO_TYPE_I4) {
5520                         MonoInst *cmp, *ceq;
5521
5522                         if (!mono_arch_opcode_supported (OP_ATOMIC_CAS_I4))
5523                                 return NULL;
5524
5525                         /* int32 r = CAS (location, value, comparand); */
5526                         MONO_INST_NEW (cfg, ins, OP_ATOMIC_CAS_I4);
5527                         ins->dreg = alloc_ireg (cfg);
5528                         ins->sreg1 = args [0]->dreg;
5529                         ins->sreg2 = args [1]->dreg;
5530                         ins->sreg3 = args [2]->dreg;
5531                         ins->type = STACK_I4;
5532                         MONO_ADD_INS (cfg->cbb, ins);
5533
5534                         /* bool result = r == comparand; */
5535                         MONO_INST_NEW (cfg, cmp, OP_ICOMPARE);
5536                         cmp->sreg1 = ins->dreg;
5537                         cmp->sreg2 = args [2]->dreg;
5538                         cmp->type = STACK_I4;
5539                         MONO_ADD_INS (cfg->cbb, cmp);
5540
5541                         MONO_INST_NEW (cfg, ceq, OP_ICEQ);
5542                         ceq->dreg = alloc_ireg (cfg);
5543                         ceq->type = STACK_I4;
5544                         MONO_ADD_INS (cfg->cbb, ceq);
5545
5546                         /* *success = result; */
5547                         MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREI1_MEMBASE_REG, args [3]->dreg, 0, ceq->dreg);
5548
5549                         cfg->has_atomic_cas_i4 = TRUE;
5550                 }
5551                 else if (strcmp (cmethod->name, "MemoryBarrier") == 0 && fsig->param_count == 0)
5552                         ins = mini_emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_SEQ);
5553
5554                 if (ins)
5555                         return ins;
5556         } else if (cmethod->klass->image == mono_defaults.corlib &&
5557                            (strcmp (cmethod->klass->name_space, "System.Threading") == 0) &&
5558                            (strcmp (cmethod->klass->name, "Volatile") == 0)) {
5559                 ins = NULL;
5560
5561                 if (!cfg->llvm_only && !strcmp (cmethod->name, "Read") && fsig->param_count == 1) {
5562                         guint32 opcode = 0;
5563                         MonoType *t = fsig->params [0];
5564                         gboolean is_ref;
5565                         gboolean is_float = t->type == MONO_TYPE_R4 || t->type == MONO_TYPE_R8;
5566
5567                         g_assert (t->byref);
5568                         /* t is a byref type, so the reference check is more complicated */
5569                         is_ref = mini_type_is_reference (&mono_class_from_mono_type (t)->byval_arg);
5570                         if (t->type == MONO_TYPE_I1)
5571                                 opcode = OP_ATOMIC_LOAD_I1;
5572                         else if (t->type == MONO_TYPE_U1 || t->type == MONO_TYPE_BOOLEAN)
5573                                 opcode = OP_ATOMIC_LOAD_U1;
5574                         else if (t->type == MONO_TYPE_I2)
5575                                 opcode = OP_ATOMIC_LOAD_I2;
5576                         else if (t->type == MONO_TYPE_U2)
5577                                 opcode = OP_ATOMIC_LOAD_U2;
5578                         else if (t->type == MONO_TYPE_I4)
5579                                 opcode = OP_ATOMIC_LOAD_I4;
5580                         else if (t->type == MONO_TYPE_U4)
5581                                 opcode = OP_ATOMIC_LOAD_U4;
5582                         else if (t->type == MONO_TYPE_R4)
5583                                 opcode = OP_ATOMIC_LOAD_R4;
5584                         else if (t->type == MONO_TYPE_R8)
5585                                 opcode = OP_ATOMIC_LOAD_R8;
5586 #if SIZEOF_REGISTER == 8
5587                         else if (t->type == MONO_TYPE_I8 || t->type == MONO_TYPE_I)
5588                                 opcode = OP_ATOMIC_LOAD_I8;
5589                         else if (is_ref || t->type == MONO_TYPE_U8 || t->type == MONO_TYPE_U)
5590                                 opcode = OP_ATOMIC_LOAD_U8;
5591 #else
5592                         else if (t->type == MONO_TYPE_I)
5593                                 opcode = OP_ATOMIC_LOAD_I4;
5594                         else if (is_ref || t->type == MONO_TYPE_U)
5595                                 opcode = OP_ATOMIC_LOAD_U4;
5596 #endif
5597
5598                         if (opcode) {
5599                                 if (!mono_arch_opcode_supported (opcode))
5600                                         return NULL;
5601
5602                                 MONO_INST_NEW (cfg, ins, opcode);
5603                                 ins->dreg = is_ref ? mono_alloc_ireg_ref (cfg) : (is_float ? mono_alloc_freg (cfg) : mono_alloc_ireg (cfg));
5604                                 ins->sreg1 = args [0]->dreg;
5605                                 ins->backend.memory_barrier_kind = MONO_MEMORY_BARRIER_ACQ;
5606                                 MONO_ADD_INS (cfg->cbb, ins);
5607
5608                                 switch (t->type) {
5609                                 case MONO_TYPE_BOOLEAN:
5610                                 case MONO_TYPE_I1:
5611                                 case MONO_TYPE_U1:
5612                                 case MONO_TYPE_I2:
5613                                 case MONO_TYPE_U2:
5614                                 case MONO_TYPE_I4:
5615                                 case MONO_TYPE_U4:
5616                                         ins->type = STACK_I4;
5617                                         break;
5618                                 case MONO_TYPE_I8:
5619                                 case MONO_TYPE_U8:
5620                                         ins->type = STACK_I8;
5621                                         break;
5622                                 case MONO_TYPE_I:
5623                                 case MONO_TYPE_U:
5624 #if SIZEOF_REGISTER == 8
5625                                         ins->type = STACK_I8;
5626 #else
5627                                         ins->type = STACK_I4;
5628 #endif
5629                                         break;
5630                                 case MONO_TYPE_R4:
5631                                         ins->type = cfg->r4_stack_type;
5632                                         break;
5633                                 case MONO_TYPE_R8:
5634                                         ins->type = STACK_R8;
5635                                         break;
5636                                 default:
5637                                         g_assert (is_ref);
5638                                         ins->type = STACK_OBJ;
5639                                         break;
5640                                 }
5641                         }
5642                 }
5643
5644                 if (!cfg->llvm_only && !strcmp (cmethod->name, "Write") && fsig->param_count == 2) {
5645                         guint32 opcode = 0;
5646                         MonoType *t = fsig->params [0];
5647                         gboolean is_ref;
5648
5649                         g_assert (t->byref);
5650                         is_ref = mini_type_is_reference (&mono_class_from_mono_type (t)->byval_arg);
5651                         if (t->type == MONO_TYPE_I1)
5652                                 opcode = OP_ATOMIC_STORE_I1;
5653                         else if (t->type == MONO_TYPE_U1 || t->type == MONO_TYPE_BOOLEAN)
5654                                 opcode = OP_ATOMIC_STORE_U1;
5655                         else if (t->type == MONO_TYPE_I2)
5656                                 opcode = OP_ATOMIC_STORE_I2;
5657                         else if (t->type == MONO_TYPE_U2)
5658                                 opcode = OP_ATOMIC_STORE_U2;
5659                         else if (t->type == MONO_TYPE_I4)
5660                                 opcode = OP_ATOMIC_STORE_I4;
5661                         else if (t->type == MONO_TYPE_U4)
5662                                 opcode = OP_ATOMIC_STORE_U4;
5663                         else if (t->type == MONO_TYPE_R4)
5664                                 opcode = OP_ATOMIC_STORE_R4;
5665                         else if (t->type == MONO_TYPE_R8)
5666                                 opcode = OP_ATOMIC_STORE_R8;
5667 #if SIZEOF_REGISTER == 8
5668                         else if (t->type == MONO_TYPE_I8 || t->type == MONO_TYPE_I)
5669                                 opcode = OP_ATOMIC_STORE_I8;
5670                         else if (is_ref || t->type == MONO_TYPE_U8 || t->type == MONO_TYPE_U)
5671                                 opcode = OP_ATOMIC_STORE_U8;
5672 #else
5673                         else if (t->type == MONO_TYPE_I)
5674                                 opcode = OP_ATOMIC_STORE_I4;
5675                         else if (is_ref || t->type == MONO_TYPE_U)
5676                                 opcode = OP_ATOMIC_STORE_U4;
5677 #endif
5678
5679                         if (opcode) {
5680                                 if (!mono_arch_opcode_supported (opcode))
5681                                         return NULL;
5682
5683                                 MONO_INST_NEW (cfg, ins, opcode);
5684                                 ins->dreg = args [0]->dreg;
5685                                 ins->sreg1 = args [1]->dreg;
5686                                 ins->backend.memory_barrier_kind = MONO_MEMORY_BARRIER_REL;
5687                                 MONO_ADD_INS (cfg->cbb, ins);
5688
5689                                 if (cfg->gen_write_barriers && is_ref)
5690                                         mini_emit_write_barrier (cfg, args [0], args [1]);
5691                         }
5692                 }
5693
5694                 if (ins)
5695                         return ins;
5696         } else if (cmethod->klass->image == mono_defaults.corlib &&
5697                            (strcmp (cmethod->klass->name_space, "System.Diagnostics") == 0) &&
5698                            (strcmp (cmethod->klass->name, "Debugger") == 0)) {
5699                 if (!strcmp (cmethod->name, "Break") && fsig->param_count == 0) {
5700                         if (mini_should_insert_breakpoint (cfg->method)) {
5701                                 ins = mono_emit_jit_icall (cfg, mono_debugger_agent_user_break, NULL);
5702                         } else {
5703                                 MONO_INST_NEW (cfg, ins, OP_NOP);
5704                                 MONO_ADD_INS (cfg->cbb, ins);
5705                         }
5706                         return ins;
5707                 }
5708         } else if (cmethod->klass->image == mono_defaults.corlib &&
5709                    (strcmp (cmethod->klass->name_space, "System") == 0) &&
5710                    (strcmp (cmethod->klass->name, "Environment") == 0)) {
5711                 if (!strcmp (cmethod->name, "get_IsRunningOnWindows") && fsig->param_count == 0) {
5712 #ifdef TARGET_WIN32
5713                         EMIT_NEW_ICONST (cfg, ins, 1);
5714 #else
5715                         EMIT_NEW_ICONST (cfg, ins, 0);
5716 #endif
5717                 }
5718         } else if (cmethod->klass->image == mono_defaults.corlib &&
5719                            (strcmp (cmethod->klass->name_space, "System.Reflection") == 0) &&
5720                            (strcmp (cmethod->klass->name, "Assembly") == 0)) {
5721                 if (cfg->llvm_only && !strcmp (cmethod->name, "GetExecutingAssembly")) {
5722                         /* No stack walks are currently available, so implement this as an intrinsic */
5723                         MonoInst *assembly_ins;
5724
5725                         EMIT_NEW_AOTCONST (cfg, assembly_ins, MONO_PATCH_INFO_IMAGE, cfg->method->klass->image);
5726                         ins = mono_emit_jit_icall (cfg, mono_get_assembly_object, &assembly_ins);
5727                         return ins;
5728                 }
5729         } else if (cmethod->klass->image == mono_defaults.corlib &&
5730                            (strcmp (cmethod->klass->name_space, "System.Reflection") == 0) &&
5731                            (strcmp (cmethod->klass->name, "MethodBase") == 0)) {
5732                 if (cfg->llvm_only && !strcmp (cmethod->name, "GetCurrentMethod")) {
5733                         /* No stack walks are currently available, so implement this as an intrinsic */
5734                         MonoInst *method_ins;
5735                         MonoMethod *declaring = cfg->method;
5736
5737                         /* This returns the declaring generic method */
5738                         if (declaring->is_inflated)
5739                                 declaring = ((MonoMethodInflated*)cfg->method)->declaring;
5740                         EMIT_NEW_AOTCONST (cfg, method_ins, MONO_PATCH_INFO_METHODCONST, declaring);
5741                         ins = mono_emit_jit_icall (cfg, mono_get_method_object, &method_ins);
5742                         cfg->no_inline = TRUE;
5743                         if (cfg->method != cfg->current_method)
5744                                 inline_failure (cfg, "MethodBase:GetCurrentMethod ()");
5745                         return ins;
5746                 }
5747         } else if (cmethod->klass == mono_defaults.math_class) {
5748                 /*
5749                  * There is general branchless code for Min/Max, but it does not work for
5750                  * all inputs:
5751                  * http://everything2.com/?node_id=1051618
5752                  */
5753         } else if (cmethod->klass == mono_defaults.systemtype_class && !strcmp (cmethod->name, "op_Equality")) {
5754                 EMIT_NEW_BIALU (cfg, ins, OP_COMPARE, -1, args [0]->dreg, args [1]->dreg);
5755                 MONO_INST_NEW (cfg, ins, OP_PCEQ);
5756                 ins->dreg = alloc_preg (cfg);
5757                 ins->type = STACK_I4;
5758                 MONO_ADD_INS (cfg->cbb, ins);
5759                 return ins;
5760         } else if (((!strcmp (cmethod->klass->image->assembly->aname.name, "MonoMac") ||
5761                     !strcmp (cmethod->klass->image->assembly->aname.name, "monotouch")) &&
5762                                 !strcmp (cmethod->klass->name_space, "XamCore.ObjCRuntime") &&
5763                                 !strcmp (cmethod->klass->name, "Selector")) ||
5764                            ((!strcmp (cmethod->klass->image->assembly->aname.name, "Xamarin.iOS") ||
5765                                  !strcmp (cmethod->klass->image->assembly->aname.name, "Xamarin.Mac")) &&
5766                                 !strcmp (cmethod->klass->name_space, "ObjCRuntime") &&
5767                                 !strcmp (cmethod->klass->name, "Selector"))
5768                            ) {
5769                 if ((cfg->backend->have_objc_get_selector || cfg->compile_llvm) &&
5770                         !strcmp (cmethod->name, "GetHandle") && fsig->param_count == 1 &&
5771                     (args [0]->opcode == OP_GOT_ENTRY || args [0]->opcode == OP_AOTCONST) &&
5772                     cfg->compile_aot) {
5773                         MonoInst *pi;
5774                         MonoJumpInfoToken *ji;
5775                         char *s;
5776
5777                         if (args [0]->opcode == OP_GOT_ENTRY) {
5778                                 pi = (MonoInst *)args [0]->inst_p1;
5779                                 g_assert (pi->opcode == OP_PATCH_INFO);
5780                                 g_assert (GPOINTER_TO_INT (pi->inst_p1) == MONO_PATCH_INFO_LDSTR);
5781                                 ji = (MonoJumpInfoToken *)pi->inst_p0;
5782                         } else {
5783                                 g_assert (GPOINTER_TO_INT (args [0]->inst_p1) == MONO_PATCH_INFO_LDSTR);
5784                                 ji = (MonoJumpInfoToken *)args [0]->inst_p0;
5785                         }
5786
5787                         NULLIFY_INS (args [0]);
5788
5789                         s = mono_ldstr_utf8 (ji->image, mono_metadata_token_index (ji->token), &cfg->error);
5790                         return_val_if_nok (&cfg->error, NULL);
5791
5792                         MONO_INST_NEW (cfg, ins, OP_OBJC_GET_SELECTOR);
5793                         ins->dreg = mono_alloc_ireg (cfg);
5794                         // FIXME: Leaks
5795                         ins->inst_p0 = s;
5796                         MONO_ADD_INS (cfg->cbb, ins);
5797                         return ins;
5798                 }
5799         } else if (cmethod->klass->image == mono_defaults.corlib &&
5800                         (strcmp (cmethod->klass->name_space, "System.Runtime.InteropServices") == 0) &&
5801                         (strcmp (cmethod->klass->name, "Marshal") == 0)) {
5802                 //Convert Marshal.PtrToStructure<T> of blittable T to direct loads
5803                 if (strcmp (cmethod->name, "PtrToStructure") == 0 &&
5804                                 cmethod->is_inflated &&
5805                                 fsig->param_count == 1 &&
5806                                 !mini_method_check_context_used (cfg, cmethod)) {
5807
5808                         MonoGenericContext *method_context = mono_method_get_context (cmethod);
5809                         MonoType *arg0 = method_context->method_inst->type_argv [0];
5810                         if (mono_type_is_native_blittable (arg0))
5811                                 return mini_emit_memory_load (cfg, arg0, args [0], 0, 0);
5812                 }
5813         }
5814
5815 #ifdef MONO_ARCH_SIMD_INTRINSICS
5816         if (cfg->opt & MONO_OPT_SIMD) {
5817                 ins = mono_emit_simd_intrinsics (cfg, cmethod, fsig, args);
5818                 if (ins)
5819                         return ins;
5820         }
5821 #endif
5822
5823         ins = mono_emit_native_types_intrinsics (cfg, cmethod, fsig, args);
5824         if (ins)
5825                 return ins;
5826
5827         if (COMPILE_LLVM (cfg)) {
5828                 ins = llvm_emit_inst_for_method (cfg, cmethod, fsig, args);
5829                 if (ins)
5830                         return ins;
5831         }
5832
5833         return mono_arch_emit_inst_for_method (cfg, cmethod, fsig, args);
5834 }
5835
5836 /*
5837  * This entry point could be used later for arbitrary method
5838  * redirection.
5839  */
5840 inline static MonoInst*
5841 mini_redirect_call (MonoCompile *cfg, MonoMethod *method,
5842                                         MonoMethodSignature *signature, MonoInst **args, MonoInst *this_ins)
5843 {
5844         if (method->klass == mono_defaults.string_class) {
5845                 /* managed string allocation support */
5846                 if (strcmp (method->name, "InternalAllocateStr") == 0 && !(cfg->opt & MONO_OPT_SHARED)) {
5847                         MonoInst *iargs [2];
5848                         MonoVTable *vtable = mono_class_vtable (cfg->domain, method->klass);
5849                         MonoMethod *managed_alloc = NULL;
5850
5851                         g_assert (vtable); /*Should not fail since it System.String*/
5852 #ifndef MONO_CROSS_COMPILE
5853                         managed_alloc = mono_gc_get_managed_allocator (method->klass, FALSE, FALSE);
5854 #endif
5855                         if (!managed_alloc)
5856                                 return NULL;
5857                         EMIT_NEW_VTABLECONST (cfg, iargs [0], vtable);
5858                         iargs [1] = args [0];
5859                         return mono_emit_method_call (cfg, managed_alloc, iargs, this_ins);
5860                 }
5861         }
5862         return NULL;
5863 }
5864
5865 static void
5866 mono_save_args (MonoCompile *cfg, MonoMethodSignature *sig, MonoInst **sp)
5867 {
5868         MonoInst *store, *temp;
5869         int i;
5870
5871         for (i = 0; i < sig->param_count + sig->hasthis; ++i) {
5872                 MonoType *argtype = (sig->hasthis && (i == 0)) ? type_from_stack_type (*sp) : sig->params [i - sig->hasthis];
5873
5874                 /*
5875                  * FIXME: We should use *args++ = sp [0], but that would mean the arg
5876                  * would be different than the MonoInst's used to represent arguments, and
5877                  * the ldelema implementation can't deal with that.
5878                  * Solution: When ldelema is used on an inline argument, create a var for
5879                  * it, emit ldelema on that var, and emit the saving code below in
5880                  * inline_method () if needed.
5881                  */
5882                 temp = mono_compile_create_var (cfg, argtype, OP_LOCAL);
5883                 cfg->args [i] = temp;
5884                 /* This uses cfg->args [i] which is set by the preceeding line */
5885                 EMIT_NEW_ARGSTORE (cfg, store, i, *sp);
5886                 store->cil_code = sp [0]->cil_code;
5887                 sp++;
5888         }
5889 }
5890
5891 #define MONO_INLINE_CALLED_LIMITED_METHODS 1
5892 #define MONO_INLINE_CALLER_LIMITED_METHODS 1
5893
5894 #if (MONO_INLINE_CALLED_LIMITED_METHODS)
5895 static gboolean
5896 check_inline_called_method_name_limit (MonoMethod *called_method)
5897 {
5898         int strncmp_result;
5899         static const char *limit = NULL;
5900
5901         if (limit == NULL) {
5902                 const char *limit_string = g_getenv ("MONO_INLINE_CALLED_METHOD_NAME_LIMIT");
5903
5904                 if (limit_string != NULL)
5905                         limit = limit_string;
5906                 else
5907                         limit = "";
5908         }
5909
5910         if (limit [0] != '\0') {
5911                 char *called_method_name = mono_method_full_name (called_method, TRUE);
5912
5913                 strncmp_result = strncmp (called_method_name, limit, strlen (limit));
5914                 g_free (called_method_name);
5915
5916                 //return (strncmp_result <= 0);
5917                 return (strncmp_result == 0);
5918         } else {
5919                 return TRUE;
5920         }
5921 }
5922 #endif
5923
5924 #if (MONO_INLINE_CALLER_LIMITED_METHODS)
5925 static gboolean
5926 check_inline_caller_method_name_limit (MonoMethod *caller_method)
5927 {
5928         int strncmp_result;
5929         static const char *limit = NULL;
5930
5931         if (limit == NULL) {
5932                 const char *limit_string = g_getenv ("MONO_INLINE_CALLER_METHOD_NAME_LIMIT");
5933                 if (limit_string != NULL) {
5934                         limit = limit_string;
5935                 } else {
5936                         limit = "";
5937                 }
5938         }
5939
5940         if (limit [0] != '\0') {
5941                 char *caller_method_name = mono_method_full_name (caller_method, TRUE);
5942
5943                 strncmp_result = strncmp (caller_method_name, limit, strlen (limit));
5944                 g_free (caller_method_name);
5945
5946                 //return (strncmp_result <= 0);
5947                 return (strncmp_result == 0);
5948         } else {
5949                 return TRUE;
5950         }
5951 }
5952 #endif
5953
5954 static void
5955 emit_init_rvar (MonoCompile *cfg, int dreg, MonoType *rtype)
5956 {
5957         static double r8_0 = 0.0;
5958         static float r4_0 = 0.0;
5959         MonoInst *ins;
5960         int t;
5961
5962         rtype = mini_get_underlying_type (rtype);
5963         t = rtype->type;
5964
5965         if (rtype->byref) {
5966                 MONO_EMIT_NEW_PCONST (cfg, dreg, NULL);
5967         } else if (t >= MONO_TYPE_BOOLEAN && t <= MONO_TYPE_U4) {
5968                 MONO_EMIT_NEW_ICONST (cfg, dreg, 0);
5969         } else if (t == MONO_TYPE_I8 || t == MONO_TYPE_U8) {
5970                 MONO_EMIT_NEW_I8CONST (cfg, dreg, 0);
5971         } else if (cfg->r4fp && t == MONO_TYPE_R4) {
5972                 MONO_INST_NEW (cfg, ins, OP_R4CONST);
5973                 ins->type = STACK_R4;
5974                 ins->inst_p0 = (void*)&r4_0;
5975                 ins->dreg = dreg;
5976                 MONO_ADD_INS (cfg->cbb, ins);
5977         } else if (t == MONO_TYPE_R4 || t == MONO_TYPE_R8) {
5978                 MONO_INST_NEW (cfg, ins, OP_R8CONST);
5979                 ins->type = STACK_R8;
5980                 ins->inst_p0 = (void*)&r8_0;
5981                 ins->dreg = dreg;
5982                 MONO_ADD_INS (cfg->cbb, ins);
5983         } else if ((t == MONO_TYPE_VALUETYPE) || (t == MONO_TYPE_TYPEDBYREF) ||
5984                    ((t == MONO_TYPE_GENERICINST) && mono_type_generic_inst_is_valuetype (rtype))) {
5985                 MONO_EMIT_NEW_VZERO (cfg, dreg, mono_class_from_mono_type (rtype));
5986         } else if (((t == MONO_TYPE_VAR) || (t == MONO_TYPE_MVAR)) && mini_type_var_is_vt (rtype)) {
5987                 MONO_EMIT_NEW_VZERO (cfg, dreg, mono_class_from_mono_type (rtype));
5988         } else {
5989                 MONO_EMIT_NEW_PCONST (cfg, dreg, NULL);
5990         }
5991 }
5992
5993 static void
5994 emit_dummy_init_rvar (MonoCompile *cfg, int dreg, MonoType *rtype)
5995 {
5996         int t;
5997
5998         rtype = mini_get_underlying_type (rtype);
5999         t = rtype->type;
6000
6001         if (rtype->byref) {
6002                 MONO_EMIT_NEW_DUMMY_INIT (cfg, dreg, OP_DUMMY_PCONST);
6003         } else if (t >= MONO_TYPE_BOOLEAN && t <= MONO_TYPE_U4) {
6004                 MONO_EMIT_NEW_DUMMY_INIT (cfg, dreg, OP_DUMMY_ICONST);
6005         } else if (t == MONO_TYPE_I8 || t == MONO_TYPE_U8) {
6006                 MONO_EMIT_NEW_DUMMY_INIT (cfg, dreg, OP_DUMMY_I8CONST);
6007         } else if (cfg->r4fp && t == MONO_TYPE_R4) {
6008                 MONO_EMIT_NEW_DUMMY_INIT (cfg, dreg, OP_DUMMY_R4CONST);
6009         } else if (t == MONO_TYPE_R4 || t == MONO_TYPE_R8) {
6010                 MONO_EMIT_NEW_DUMMY_INIT (cfg, dreg, OP_DUMMY_R8CONST);
6011         } else if ((t == MONO_TYPE_VALUETYPE) || (t == MONO_TYPE_TYPEDBYREF) ||
6012                    ((t == MONO_TYPE_GENERICINST) && mono_type_generic_inst_is_valuetype (rtype))) {
6013                 MONO_EMIT_NEW_DUMMY_INIT (cfg, dreg, OP_DUMMY_VZERO);
6014         } else if (((t == MONO_TYPE_VAR) || (t == MONO_TYPE_MVAR)) && mini_type_var_is_vt (rtype)) {
6015                 MONO_EMIT_NEW_DUMMY_INIT (cfg, dreg, OP_DUMMY_VZERO);
6016         } else {
6017                 emit_init_rvar (cfg, dreg, rtype);
6018         }
6019 }
6020
6021 /* If INIT is FALSE, emit dummy initialization statements to keep the IR valid */
6022 static void
6023 emit_init_local (MonoCompile *cfg, int local, MonoType *type, gboolean init)
6024 {
6025         MonoInst *var = cfg->locals [local];
6026         if (COMPILE_SOFT_FLOAT (cfg)) {
6027                 MonoInst *store;
6028                 int reg = alloc_dreg (cfg, (MonoStackType)var->type);
6029                 emit_init_rvar (cfg, reg, type);
6030                 EMIT_NEW_LOCSTORE (cfg, store, local, cfg->cbb->last_ins);
6031         } else {
6032                 if (init)
6033                         emit_init_rvar (cfg, var->dreg, type);
6034                 else
6035                         emit_dummy_init_rvar (cfg, var->dreg, type);
6036         }
6037 }
6038
6039 int
6040 mini_inline_method (MonoCompile *cfg, MonoMethod *cmethod, MonoMethodSignature *fsig, MonoInst **sp, guchar *ip, guint real_offset, gboolean inline_always)
6041 {
6042         return inline_method (cfg, cmethod, fsig, sp, ip, real_offset, inline_always);
6043 }
6044
6045 /*
6046  * inline_method:
6047  *
6048  * Return the cost of inlining CMETHOD, or zero if it should not be inlined.
6049  */
6050 static int
6051 inline_method (MonoCompile *cfg, MonoMethod *cmethod, MonoMethodSignature *fsig, MonoInst **sp,
6052                guchar *ip, guint real_offset, gboolean inline_always)
6053 {
6054         MonoError error;
6055         MonoInst *ins, *rvar = NULL;
6056         MonoMethodHeader *cheader;
6057         MonoBasicBlock *ebblock, *sbblock;
6058         int i, costs;
6059         MonoMethod *prev_inlined_method;
6060         MonoInst **prev_locals, **prev_args;
6061         MonoType **prev_arg_types;
6062         guint prev_real_offset;
6063         GHashTable *prev_cbb_hash;
6064         MonoBasicBlock **prev_cil_offset_to_bb;
6065         MonoBasicBlock *prev_cbb;
6066         const unsigned char *prev_ip;
6067         unsigned char *prev_cil_start;
6068         guint32 prev_cil_offset_to_bb_len;
6069         MonoMethod *prev_current_method;
6070         MonoGenericContext *prev_generic_context;
6071         gboolean ret_var_set, prev_ret_var_set, prev_disable_inline, virtual_ = FALSE;
6072
6073         g_assert (cfg->exception_type == MONO_EXCEPTION_NONE);
6074
6075 #if (MONO_INLINE_CALLED_LIMITED_METHODS)
6076         if ((! inline_always) && ! check_inline_called_method_name_limit (cmethod))
6077                 return 0;
6078 #endif
6079 #if (MONO_INLINE_CALLER_LIMITED_METHODS)
6080         if ((! inline_always) && ! check_inline_caller_method_name_limit (cfg->method))
6081                 return 0;
6082 #endif
6083
6084         if (!fsig)
6085                 fsig = mono_method_signature (cmethod);
6086
6087         if (cfg->verbose_level > 2)
6088                 printf ("INLINE START %p %s -> %s\n", cmethod,  mono_method_full_name (cfg->method, TRUE), mono_method_full_name (cmethod, TRUE));
6089
6090         if (!cmethod->inline_info) {
6091                 cfg->stat_inlineable_methods++;
6092                 cmethod->inline_info = 1;
6093         }
6094
6095         /* allocate local variables */
6096         cheader = mono_method_get_header_checked (cmethod, &error);
6097         if (!cheader) {
6098                 if (inline_always) {
6099                         mono_cfg_set_exception (cfg, MONO_EXCEPTION_MONO_ERROR);
6100                         mono_error_move (&cfg->error, &error);
6101                 } else {
6102                         mono_error_cleanup (&error);
6103                 }
6104                 return 0;
6105         }
6106
6107         /*Must verify before creating locals as it can cause the JIT to assert.*/
6108         if (mono_compile_is_broken (cfg, cmethod, FALSE)) {
6109                 mono_metadata_free_mh (cheader);
6110                 return 0;
6111         }
6112
6113         /* allocate space to store the return value */
6114         if (!MONO_TYPE_IS_VOID (fsig->ret)) {
6115                 rvar = mono_compile_create_var (cfg, fsig->ret, OP_LOCAL);
6116         }
6117
6118         prev_locals = cfg->locals;
6119         cfg->locals = (MonoInst **)mono_mempool_alloc0 (cfg->mempool, cheader->num_locals * sizeof (MonoInst*));
6120         for (i = 0; i < cheader->num_locals; ++i)
6121                 cfg->locals [i] = mono_compile_create_var (cfg, cheader->locals [i], OP_LOCAL);
6122
6123         /* allocate start and end blocks */
6124         /* This is needed so if the inline is aborted, we can clean up */
6125         NEW_BBLOCK (cfg, sbblock);
6126         sbblock->real_offset = real_offset;
6127
6128         NEW_BBLOCK (cfg, ebblock);
6129         ebblock->block_num = cfg->num_bblocks++;
6130         ebblock->real_offset = real_offset;
6131
6132         prev_args = cfg->args;
6133         prev_arg_types = cfg->arg_types;
6134         prev_inlined_method = cfg->inlined_method;
6135         cfg->inlined_method = cmethod;
6136         cfg->ret_var_set = FALSE;
6137         cfg->inline_depth ++;
6138         prev_real_offset = cfg->real_offset;
6139         prev_cbb_hash = cfg->cbb_hash;
6140         prev_cil_offset_to_bb = cfg->cil_offset_to_bb;
6141         prev_cil_offset_to_bb_len = cfg->cil_offset_to_bb_len;
6142         prev_cil_start = cfg->cil_start;
6143         prev_ip = cfg->ip;
6144         prev_cbb = cfg->cbb;
6145         prev_current_method = cfg->current_method;
6146         prev_generic_context = cfg->generic_context;
6147         prev_ret_var_set = cfg->ret_var_set;
6148         prev_disable_inline = cfg->disable_inline;
6149
6150         if (ip && *ip == CEE_CALLVIRT && !(cmethod->flags & METHOD_ATTRIBUTE_STATIC))
6151                 virtual_ = TRUE;
6152
6153         costs = mono_method_to_ir (cfg, cmethod, sbblock, ebblock, rvar, sp, real_offset, virtual_);
6154
6155         ret_var_set = cfg->ret_var_set;
6156
6157         cfg->inlined_method = prev_inlined_method;
6158         cfg->real_offset = prev_real_offset;
6159         cfg->cbb_hash = prev_cbb_hash;
6160         cfg->cil_offset_to_bb = prev_cil_offset_to_bb;
6161         cfg->cil_offset_to_bb_len = prev_cil_offset_to_bb_len;
6162         cfg->cil_start = prev_cil_start;
6163         cfg->ip = prev_ip;
6164         cfg->locals = prev_locals;
6165         cfg->args = prev_args;
6166         cfg->arg_types = prev_arg_types;
6167         cfg->current_method = prev_current_method;
6168         cfg->generic_context = prev_generic_context;
6169         cfg->ret_var_set = prev_ret_var_set;
6170         cfg->disable_inline = prev_disable_inline;
6171         cfg->inline_depth --;
6172
6173         if ((costs >= 0 && costs < 60) || inline_always || (costs >= 0 && (cmethod->iflags & METHOD_IMPL_ATTRIBUTE_AGGRESSIVE_INLINING))) {
6174                 if (cfg->verbose_level > 2)
6175                         printf ("INLINE END %s -> %s\n", mono_method_full_name (cfg->method, TRUE), mono_method_full_name (cmethod, TRUE));
6176
6177                 cfg->stat_inlined_methods++;
6178
6179                 /* always add some code to avoid block split failures */
6180                 MONO_INST_NEW (cfg, ins, OP_NOP);
6181                 MONO_ADD_INS (prev_cbb, ins);
6182
6183                 prev_cbb->next_bb = sbblock;
6184                 link_bblock (cfg, prev_cbb, sbblock);
6185
6186                 /*
6187                  * Get rid of the begin and end bblocks if possible to aid local
6188                  * optimizations.
6189                  */
6190                 if (prev_cbb->out_count == 1)
6191                         mono_merge_basic_blocks (cfg, prev_cbb, sbblock);
6192
6193                 if ((prev_cbb->out_count == 1) && (prev_cbb->out_bb [0]->in_count == 1) && (prev_cbb->out_bb [0] != ebblock))
6194                         mono_merge_basic_blocks (cfg, prev_cbb, prev_cbb->out_bb [0]);
6195
6196                 if ((ebblock->in_count == 1) && ebblock->in_bb [0]->out_count == 1) {
6197                         MonoBasicBlock *prev = ebblock->in_bb [0];
6198
6199                         if (prev->next_bb == ebblock) {
6200                                 mono_merge_basic_blocks (cfg, prev, ebblock);
6201                                 cfg->cbb = prev;
6202                                 if ((prev_cbb->out_count == 1) && (prev_cbb->out_bb [0]->in_count == 1) && (prev_cbb->out_bb [0] == prev)) {
6203                                         mono_merge_basic_blocks (cfg, prev_cbb, prev);
6204                                         cfg->cbb = prev_cbb;
6205                                 }
6206                         } else {
6207                                 /* There could be a bblock after 'prev', and making 'prev' the current bb could cause problems */
6208                                 cfg->cbb = ebblock;
6209                         }
6210                 } else {
6211                         /*
6212                          * Its possible that the rvar is set in some prev bblock, but not in others.
6213                          * (#1835).
6214                          */
6215                         if (rvar) {
6216                                 MonoBasicBlock *bb;
6217
6218                                 for (i = 0; i < ebblock->in_count; ++i) {
6219                                         bb = ebblock->in_bb [i];
6220
6221                                         if (bb->last_ins && bb->last_ins->opcode == OP_NOT_REACHED) {
6222                                                 cfg->cbb = bb;
6223
6224                                                 emit_init_rvar (cfg, rvar->dreg, fsig->ret);
6225                                         }
6226                                 }
6227                         }
6228
6229                         cfg->cbb = ebblock;
6230                 }
6231
6232                 if (rvar) {
6233                         /*
6234                          * If the inlined method contains only a throw, then the ret var is not
6235                          * set, so set it to a dummy value.
6236                          */
6237                         if (!ret_var_set)
6238                                 emit_init_rvar (cfg, rvar->dreg, fsig->ret);
6239
6240                         EMIT_NEW_TEMPLOAD (cfg, ins, rvar->inst_c0);
6241                         *sp++ = ins;
6242                 }
6243                 cfg->headers_to_free = g_slist_prepend_mempool (cfg->mempool, cfg->headers_to_free, cheader);
6244                 return costs + 1;
6245         } else {
6246                 if (cfg->verbose_level > 2)
6247                         printf ("INLINE ABORTED %s (cost %d)\n", mono_method_full_name (cmethod, TRUE), costs);
6248                 cfg->exception_type = MONO_EXCEPTION_NONE;
6249
6250                 /* This gets rid of the newly added bblocks */
6251                 cfg->cbb = prev_cbb;
6252         }
6253         cfg->headers_to_free = g_slist_prepend_mempool (cfg->mempool, cfg->headers_to_free, cheader);
6254         return 0;
6255 }
6256
6257 /*
6258  * Some of these comments may well be out-of-date.
6259  * Design decisions: we do a single pass over the IL code (and we do bblock
6260  * splitting/merging in the few cases when it's required: a back jump to an IL
6261  * address that was not already seen as bblock starting point).
6262  * Code is validated as we go (full verification is still better left to metadata/verify.c).
6263  * Complex operations are decomposed in simpler ones right away. We need to let the
6264  * arch-specific code peek and poke inside this process somehow (except when the
6265  * optimizations can take advantage of the full semantic info of coarse opcodes).
6266  * All the opcodes of the form opcode.s are 'normalized' to opcode.
6267  * MonoInst->opcode initially is the IL opcode or some simplification of that
6268  * (OP_LOAD, OP_STORE). The arch-specific code may rearrange it to an arch-specific
6269  * opcode with value bigger than OP_LAST.
6270  * At this point the IR can be handed over to an interpreter, a dumb code generator
6271  * or to the optimizing code generator that will translate it to SSA form.
6272  *
6273  * Profiling directed optimizations.
6274  * We may compile by default with few or no optimizations and instrument the code
6275  * or the user may indicate what methods to optimize the most either in a config file
6276  * or through repeated runs where the compiler applies offline the optimizations to
6277  * each method and then decides if it was worth it.
6278  */
6279
6280 #define CHECK_TYPE(ins) if (!(ins)->type) UNVERIFIED
6281 #define CHECK_STACK(num) if ((sp - stack_start) < (num)) UNVERIFIED
6282 #define CHECK_STACK_OVF(num) if (((sp - stack_start) + (num)) > header->max_stack) UNVERIFIED
6283 #define CHECK_ARG(num) if ((unsigned)(num) >= (unsigned)num_args) UNVERIFIED
6284 #define CHECK_LOCAL(num) if ((unsigned)(num) >= (unsigned)header->num_locals) UNVERIFIED
6285 #define CHECK_OPSIZE(size) if (ip + size > end) UNVERIFIED
6286 #define CHECK_UNVERIFIABLE(cfg) if (cfg->unverifiable) UNVERIFIED
6287 #define CHECK_TYPELOAD(klass) if (!(klass) || mono_class_has_failure (klass)) TYPE_LOAD_ERROR ((klass))
6288
6289 /* offset from br.s -> br like opcodes */
6290 #define BIG_BRANCH_OFFSET 13
6291
6292 static gboolean
6293 ip_in_bb (MonoCompile *cfg, MonoBasicBlock *bb, const guint8* ip)
6294 {
6295         MonoBasicBlock *b = cfg->cil_offset_to_bb [ip - cfg->cil_start];
6296
6297         return b == NULL || b == bb;
6298 }
6299
6300 static int
6301 get_basic_blocks (MonoCompile *cfg, MonoMethodHeader* header, guint real_offset, unsigned char *start, unsigned char *end, unsigned char **pos)
6302 {
6303         unsigned char *ip = start;
6304         unsigned char *target;
6305         int i;
6306         guint cli_addr;
6307         MonoBasicBlock *bblock;
6308         const MonoOpcode *opcode;
6309
6310         while (ip < end) {
6311                 cli_addr = ip - start;
6312                 i = mono_opcode_value ((const guint8 **)&ip, end);
6313                 if (i < 0)
6314                         UNVERIFIED;
6315                 opcode = &mono_opcodes [i];
6316                 switch (opcode->argument) {
6317                 case MonoInlineNone:
6318                         ip++;
6319                         break;
6320                 case MonoInlineString:
6321                 case MonoInlineType:
6322                 case MonoInlineField:
6323                 case MonoInlineMethod:
6324                 case MonoInlineTok:
6325                 case MonoInlineSig:
6326                 case MonoShortInlineR:
6327                 case MonoInlineI:
6328                         ip += 5;
6329                         break;
6330                 case MonoInlineVar:
6331                         ip += 3;
6332                         break;
6333                 case MonoShortInlineVar:
6334                 case MonoShortInlineI:
6335                         ip += 2;
6336                         break;
6337                 case MonoShortInlineBrTarget:
6338                         target = start + cli_addr + 2 + (signed char)ip [1];
6339                         GET_BBLOCK (cfg, bblock, target);
6340                         ip += 2;
6341                         if (ip < end)
6342                                 GET_BBLOCK (cfg, bblock, ip);
6343                         break;
6344                 case MonoInlineBrTarget:
6345                         target = start + cli_addr + 5 + (gint32)read32 (ip + 1);
6346                         GET_BBLOCK (cfg, bblock, target);
6347                         ip += 5;
6348                         if (ip < end)
6349                                 GET_BBLOCK (cfg, bblock, ip);
6350                         break;
6351                 case MonoInlineSwitch: {
6352                         guint32 n = read32 (ip + 1);
6353                         guint32 j;
6354                         ip += 5;
6355                         cli_addr += 5 + 4 * n;
6356                         target = start + cli_addr;
6357                         GET_BBLOCK (cfg, bblock, target);
6358
6359                         for (j = 0; j < n; ++j) {
6360                                 target = start + cli_addr + (gint32)read32 (ip);
6361                                 GET_BBLOCK (cfg, bblock, target);
6362                                 ip += 4;
6363                         }
6364                         break;
6365                 }
6366                 case MonoInlineR:
6367                 case MonoInlineI8:
6368                         ip += 9;
6369                         break;
6370                 default:
6371                         g_assert_not_reached ();
6372                 }
6373
6374                 if (i == CEE_THROW) {
6375                         unsigned char *bb_start = ip - 1;
6376
6377                         /* Find the start of the bblock containing the throw */
6378                         bblock = NULL;
6379                         while ((bb_start >= start) && !bblock) {
6380                                 bblock = cfg->cil_offset_to_bb [(bb_start) - start];
6381                                 bb_start --;
6382                         }
6383                         if (bblock)
6384                                 bblock->out_of_line = 1;
6385                 }
6386         }
6387         return 0;
6388 unverified:
6389 exception_exit:
6390         *pos = ip;
6391         return 1;
6392 }
6393
6394 static inline MonoMethod *
6395 mini_get_method_allow_open (MonoMethod *m, guint32 token, MonoClass *klass, MonoGenericContext *context, MonoError *error)
6396 {
6397         MonoMethod *method;
6398
6399         error_init (error);
6400
6401         if (m->wrapper_type != MONO_WRAPPER_NONE) {
6402                 method = (MonoMethod *)mono_method_get_wrapper_data (m, token);
6403                 if (context) {
6404                         method = mono_class_inflate_generic_method_checked (method, context, error);
6405                 }
6406         } else {
6407                 method = mono_get_method_checked (m->klass->image, token, klass, context, error);
6408         }
6409
6410         return method;
6411 }
6412
6413 static inline MonoMethod *
6414 mini_get_method (MonoCompile *cfg, MonoMethod *m, guint32 token, MonoClass *klass, MonoGenericContext *context)
6415 {
6416         MonoError error;
6417         MonoMethod *method = mini_get_method_allow_open (m, token, klass, context, cfg ? &cfg->error : &error);
6418
6419         if (method && cfg && !cfg->gshared && mono_class_is_open_constructed_type (&method->klass->byval_arg)) {
6420                 mono_error_set_bad_image (&cfg->error, cfg->method->klass->image, "Method with open type while not compiling gshared");
6421                 method = NULL;
6422         }
6423
6424         if (!method && !cfg)
6425                 mono_error_cleanup (&error); /* FIXME don't swallow the error */
6426
6427         return method;
6428 }
6429
6430 static inline MonoMethodSignature*
6431 mini_get_signature (MonoMethod *method, guint32 token, MonoGenericContext *context, MonoError *error)
6432 {
6433         MonoMethodSignature *fsig;
6434
6435         error_init (error);
6436         if (method->wrapper_type != MONO_WRAPPER_NONE) {
6437                 fsig = (MonoMethodSignature *)mono_method_get_wrapper_data (method, token);
6438         } else {
6439                 fsig = mono_metadata_parse_signature_checked (method->klass->image, token, error);
6440                 return_val_if_nok (error, NULL);
6441         }
6442         if (context) {
6443                 fsig = mono_inflate_generic_signature(fsig, context, error);
6444         }
6445         return fsig;
6446 }
6447
6448 static MonoMethod*
6449 throw_exception (void)
6450 {
6451         static MonoMethod *method = NULL;
6452
6453         if (!method) {
6454                 MonoSecurityManager *secman = mono_security_manager_get_methods ();
6455                 method = mono_class_get_method_from_name (secman->securitymanager, "ThrowException", 1);
6456         }
6457         g_assert (method);
6458         return method;
6459 }
6460
6461 static void
6462 emit_throw_exception (MonoCompile *cfg, MonoException *ex)
6463 {
6464         MonoMethod *thrower = throw_exception ();
6465         MonoInst *args [1];
6466
6467         EMIT_NEW_PCONST (cfg, args [0], ex);
6468         mono_emit_method_call (cfg, thrower, args, NULL);
6469 }
6470
6471 /*
6472  * Return the original method is a wrapper is specified. We can only access
6473  * the custom attributes from the original method.
6474  */
6475 static MonoMethod*
6476 get_original_method (MonoMethod *method)
6477 {
6478         if (method->wrapper_type == MONO_WRAPPER_NONE)
6479                 return method;
6480
6481         /* native code (which is like Critical) can call any managed method XXX FIXME XXX to validate all usages */
6482         if (method->wrapper_type == MONO_WRAPPER_NATIVE_TO_MANAGED)
6483                 return NULL;
6484
6485         /* in other cases we need to find the original method */
6486         return mono_marshal_method_from_wrapper (method);
6487 }
6488
6489 static void
6490 ensure_method_is_allowed_to_access_field (MonoCompile *cfg, MonoMethod *caller, MonoClassField *field)
6491 {
6492         /* we can't get the coreclr security level on wrappers since they don't have the attributes */
6493         MonoException *ex = mono_security_core_clr_is_field_access_allowed (get_original_method (caller), field);
6494         if (ex)
6495                 emit_throw_exception (cfg, ex);
6496 }
6497
6498 static void
6499 ensure_method_is_allowed_to_call_method (MonoCompile *cfg, MonoMethod *caller, MonoMethod *callee)
6500 {
6501         /* we can't get the coreclr security level on wrappers since they don't have the attributes */
6502         MonoException *ex = mono_security_core_clr_is_call_allowed (get_original_method (caller), callee);
6503         if (ex)
6504                 emit_throw_exception (cfg, ex);
6505 }
6506
6507 /*
6508  * Check that the IL instructions at ip are the array initialization
6509  * sequence and return the pointer to the data and the size.
6510  */
6511 static const char*
6512 initialize_array_data (MonoMethod *method, gboolean aot, unsigned char *ip, MonoClass *klass, guint32 len, int *out_size, guint32 *out_field_token)
6513 {
6514         /*
6515          * newarr[System.Int32]
6516          * dup
6517          * ldtoken field valuetype ...
6518          * call void class [mscorlib]System.Runtime.CompilerServices.RuntimeHelpers::InitializeArray(class [mscorlib]System.Array, valuetype [mscorlib]System.RuntimeFieldHandle)
6519          */
6520         if (ip [0] == CEE_DUP && ip [1] == CEE_LDTOKEN && ip [5] == 0x4 && ip [6] == CEE_CALL) {
6521                 MonoError error;
6522                 guint32 token = read32 (ip + 7);
6523                 guint32 field_token = read32 (ip + 2);
6524                 guint32 field_index = field_token & 0xffffff;
6525                 guint32 rva;
6526                 const char *data_ptr;
6527                 int size = 0;
6528                 MonoMethod *cmethod;
6529                 MonoClass *dummy_class;
6530                 MonoClassField *field = mono_field_from_token_checked (method->klass->image, field_token, &dummy_class, NULL, &error);
6531                 int dummy_align;
6532
6533                 if (!field) {
6534                         mono_error_cleanup (&error); /* FIXME don't swallow the error */
6535                         return NULL;
6536                 }
6537
6538                 *out_field_token = field_token;
6539
6540                 cmethod = mini_get_method (NULL, method, token, NULL, NULL);
6541                 if (!cmethod)
6542                         return NULL;
6543                 if (strcmp (cmethod->name, "InitializeArray") || strcmp (cmethod->klass->name, "RuntimeHelpers") || cmethod->klass->image != mono_defaults.corlib)
6544                         return NULL;
6545                 switch (mini_get_underlying_type (&klass->byval_arg)->type) {
6546                 case MONO_TYPE_I1:
6547                 case MONO_TYPE_U1:
6548                         size = 1; break;
6549                 /* we need to swap on big endian, so punt. Should we handle R4 and R8 as well? */
6550 #if TARGET_BYTE_ORDER == G_LITTLE_ENDIAN
6551                 case MONO_TYPE_I2:
6552                 case MONO_TYPE_U2:
6553                         size = 2; break;
6554                 case MONO_TYPE_I4:
6555                 case MONO_TYPE_U4:
6556                 case MONO_TYPE_R4:
6557                         size = 4; break;
6558                 case MONO_TYPE_R8:
6559                 case MONO_TYPE_I8:
6560                 case MONO_TYPE_U8:
6561                         size = 8; break;
6562 #endif
6563                 default:
6564                         return NULL;
6565                 }
6566                 size *= len;
6567                 if (size > mono_type_size (field->type, &dummy_align))
6568                     return NULL;
6569                 *out_size = size;
6570                 /*g_print ("optimized in %s: size: %d, numelems: %d\n", method->name, size, newarr->inst_newa_len->inst_c0);*/
6571                 if (!image_is_dynamic (method->klass->image)) {
6572                         field_index = read32 (ip + 2) & 0xffffff;
6573                         mono_metadata_field_info (method->klass->image, field_index - 1, NULL, &rva, NULL);
6574                         data_ptr = mono_image_rva_map (method->klass->image, rva);
6575                         /*g_print ("field: 0x%08x, rva: %d, rva_ptr: %p\n", read32 (ip + 2), rva, data_ptr);*/
6576                         /* for aot code we do the lookup on load */
6577                         if (aot && data_ptr)
6578                                 return (const char *)GUINT_TO_POINTER (rva);
6579                 } else {
6580                         /*FIXME is it possible to AOT a SRE assembly not meant to be saved? */
6581                         g_assert (!aot);
6582                         data_ptr = mono_field_get_data (field);
6583                 }
6584                 return data_ptr;
6585         }
6586         return NULL;
6587 }
6588
6589 static void
6590 set_exception_type_from_invalid_il (MonoCompile *cfg, MonoMethod *method, unsigned char *ip)
6591 {
6592         MonoError error;
6593         char *method_fname = mono_method_full_name (method, TRUE);
6594         char *method_code;
6595         MonoMethodHeader *header = mono_method_get_header_checked (method, &error);
6596
6597         if (!header) {
6598                 method_code = g_strdup_printf ("could not parse method body due to %s", mono_error_get_message (&error));
6599                 mono_error_cleanup (&error);
6600         } else if (header->code_size == 0)
6601                 method_code = g_strdup ("method body is empty.");
6602         else
6603                 method_code = mono_disasm_code_one (NULL, method, ip, NULL);
6604         mono_cfg_set_exception_invalid_program (cfg, g_strdup_printf ("Invalid IL code in %s: %s\n", method_fname, method_code));
6605         g_free (method_fname);
6606         g_free (method_code);
6607         cfg->headers_to_free = g_slist_prepend_mempool (cfg->mempool, cfg->headers_to_free, header);
6608 }
6609
6610 static guint32
6611 mono_type_to_stloc_coerce (MonoType *type)
6612 {
6613         if (type->byref)
6614                 return 0;
6615
6616         type = mini_get_underlying_type (type);
6617 handle_enum:
6618         switch (type->type) {
6619         case MONO_TYPE_I1:
6620                 return OP_ICONV_TO_I1;
6621         case MONO_TYPE_U1:
6622                 return OP_ICONV_TO_U1;
6623         case MONO_TYPE_I2:
6624                 return OP_ICONV_TO_I2;
6625         case MONO_TYPE_U2:
6626                 return OP_ICONV_TO_U2;
6627         case MONO_TYPE_I4:
6628         case MONO_TYPE_U4:
6629         case MONO_TYPE_I:
6630         case MONO_TYPE_U:
6631         case MONO_TYPE_PTR:
6632         case MONO_TYPE_FNPTR:
6633         case MONO_TYPE_CLASS:
6634         case MONO_TYPE_STRING:
6635         case MONO_TYPE_OBJECT:
6636         case MONO_TYPE_SZARRAY:
6637         case MONO_TYPE_ARRAY:
6638         case MONO_TYPE_I8:
6639         case MONO_TYPE_U8:
6640         case MONO_TYPE_R4:
6641         case MONO_TYPE_R8:
6642         case MONO_TYPE_TYPEDBYREF:
6643         case MONO_TYPE_GENERICINST:
6644                 return 0;
6645         case MONO_TYPE_VALUETYPE:
6646                 if (type->data.klass->enumtype) {
6647                         type = mono_class_enum_basetype (type->data.klass);
6648                         goto handle_enum;
6649                 }
6650                 return 0;
6651         case MONO_TYPE_VAR:
6652         case MONO_TYPE_MVAR: //TODO I believe we don't need to handle gsharedvt as there won't be match and, for example, u1 is not covariant to u32
6653                 return 0;
6654         default:
6655                 g_error ("unknown type 0x%02x in mono_type_to_stloc_coerce", type->type);
6656         }
6657         return -1;
6658 }
6659
6660 static void
6661 emit_stloc_ir (MonoCompile *cfg, MonoInst **sp, MonoMethodHeader *header, int n)
6662 {
6663         MonoInst *ins;
6664         guint32 coerce_op = mono_type_to_stloc_coerce (header->locals [n]);
6665
6666         if (coerce_op) {
6667                 if (cfg->cbb->last_ins == sp [0] && sp [0]->opcode == coerce_op) {
6668                         if (cfg->verbose_level > 2)
6669                                 printf ("Found existing coercing that is enough\n");
6670                 } else {
6671                         MONO_INST_NEW (cfg, ins, coerce_op);
6672                         ins->dreg = alloc_ireg (cfg);
6673                         ins->sreg1 = sp [0]->dreg;
6674                         ins->type = STACK_I4;
6675                         ins->klass = mono_class_from_mono_type (header->locals [n]);
6676                         MONO_ADD_INS (cfg->cbb, ins);
6677                         *sp = mono_decompose_opcode (cfg, ins);
6678                 }
6679         }
6680
6681
6682         guint32 opcode = mono_type_to_regmove (cfg, header->locals [n]);
6683         if ((opcode == OP_MOVE) && cfg->cbb->last_ins == sp [0]  &&
6684                         ((sp [0]->opcode == OP_ICONST) || (sp [0]->opcode == OP_I8CONST))) {
6685                 /* Optimize reg-reg moves away */
6686                 /*
6687                  * Can't optimize other opcodes, since sp[0] might point to
6688                  * the last ins of a decomposed opcode.
6689                  */
6690                 sp [0]->dreg = (cfg)->locals [n]->dreg;
6691         } else {
6692                 EMIT_NEW_LOCSTORE (cfg, ins, n, *sp);
6693         }
6694 }
6695
6696 /*
6697  * ldloca inhibits many optimizations so try to get rid of it in common
6698  * cases.
6699  */
6700 static inline unsigned char *
6701 emit_optimized_ldloca_ir (MonoCompile *cfg, unsigned char *ip, unsigned char *end, int size)
6702 {
6703         int local, token;
6704         MonoClass *klass;
6705         MonoType *type;
6706
6707         if (size == 1) {
6708                 local = ip [1];
6709                 ip += 2;
6710         } else {
6711                 local = read16 (ip + 2);
6712                 ip += 4;
6713         }
6714
6715         if (ip + 6 < end && (ip [0] == CEE_PREFIX1) && (ip [1] == CEE_INITOBJ) && ip_in_bb (cfg, cfg->cbb, ip + 1)) {
6716                 /* From the INITOBJ case */
6717                 token = read32 (ip + 2);
6718                 klass = mini_get_class (cfg->current_method, token, cfg->generic_context);
6719                 CHECK_TYPELOAD (klass);
6720                 type = mini_get_underlying_type (&klass->byval_arg);
6721                 emit_init_local (cfg, local, type, TRUE);
6722                 return ip + 6;
6723         }
6724  exception_exit:
6725         return NULL;
6726 }
6727
6728 static MonoInst*
6729 emit_llvmonly_virtual_call (MonoCompile *cfg, MonoMethod *cmethod, MonoMethodSignature *fsig, int context_used, MonoInst **sp)
6730 {
6731         MonoInst *icall_args [16];
6732         MonoInst *call_target, *ins, *vtable_ins;
6733         int arg_reg, this_reg, vtable_reg;
6734         gboolean is_iface = mono_class_is_interface (cmethod->klass);
6735         gboolean is_gsharedvt = cfg->gsharedvt && mini_is_gsharedvt_variable_signature (fsig);
6736         gboolean variant_iface = FALSE;
6737         guint32 slot;
6738         int offset;
6739         gboolean special_array_interface = cmethod->klass->is_array_special_interface;
6740
6741         /*
6742          * In llvm-only mode, vtables contain function descriptors instead of
6743          * method addresses/trampolines.
6744          */
6745         MONO_EMIT_NULL_CHECK (cfg, sp [0]->dreg);
6746
6747         if (is_iface)
6748                 slot = mono_method_get_imt_slot (cmethod);
6749         else
6750                 slot = mono_method_get_vtable_index (cmethod);
6751
6752         this_reg = sp [0]->dreg;
6753
6754         if (is_iface && mono_class_has_variant_generic_params (cmethod->klass))
6755                 variant_iface = TRUE;
6756
6757         if (!fsig->generic_param_count && !is_iface && !is_gsharedvt) {
6758                 /*
6759                  * The simplest case, a normal virtual call.
6760                  */
6761                 int slot_reg = alloc_preg (cfg);
6762                 int addr_reg = alloc_preg (cfg);
6763                 int arg_reg = alloc_preg (cfg);
6764                 MonoBasicBlock *non_null_bb;
6765
6766                 vtable_reg = alloc_preg (cfg);
6767                 EMIT_NEW_LOAD_MEMBASE (cfg, vtable_ins, OP_LOAD_MEMBASE, vtable_reg, this_reg, MONO_STRUCT_OFFSET (MonoObject, vtable));
6768                 offset = MONO_STRUCT_OFFSET (MonoVTable, vtable) + (slot * SIZEOF_VOID_P);
6769
6770                 /* Load the vtable slot, which contains a function descriptor. */
6771                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, slot_reg, vtable_reg, offset);
6772
6773                 NEW_BBLOCK (cfg, non_null_bb);
6774
6775                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, slot_reg, 0);
6776                 cfg->cbb->last_ins->flags |= MONO_INST_LIKELY;
6777                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBNE_UN, non_null_bb);
6778
6779                 /* Slow path */
6780                 // FIXME: Make the wrapper use the preserveall cconv
6781                 // FIXME: Use one icall per slot for small slot numbers ?
6782                 icall_args [0] = vtable_ins;
6783                 EMIT_NEW_ICONST (cfg, icall_args [1], slot);
6784                 /* Make the icall return the vtable slot value to save some code space */
6785                 ins = mono_emit_jit_icall (cfg, mono_init_vtable_slot, icall_args);
6786                 ins->dreg = slot_reg;
6787                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, non_null_bb);
6788
6789                 /* Fastpath */
6790                 MONO_START_BB (cfg, non_null_bb);
6791                 /* Load the address + arg from the vtable slot */
6792                 EMIT_NEW_LOAD_MEMBASE (cfg, call_target, OP_LOAD_MEMBASE, addr_reg, slot_reg, 0);
6793                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, arg_reg, slot_reg, SIZEOF_VOID_P);
6794
6795                 return emit_extra_arg_calli (cfg, fsig, sp, arg_reg, call_target);
6796         }
6797
6798         if (!fsig->generic_param_count && is_iface && !variant_iface && !is_gsharedvt && !special_array_interface) {
6799                 /*
6800                  * A simple interface call
6801                  *
6802                  * We make a call through an imt slot to obtain the function descriptor we need to call.
6803                  * The imt slot contains a function descriptor for a runtime function + arg.
6804                  */
6805                 int slot_reg = alloc_preg (cfg);
6806                 int addr_reg = alloc_preg (cfg);
6807                 int arg_reg = alloc_preg (cfg);
6808                 MonoInst *thunk_addr_ins, *thunk_arg_ins, *ftndesc_ins;
6809
6810                 vtable_reg = alloc_preg (cfg);
6811                 EMIT_NEW_LOAD_MEMBASE (cfg, vtable_ins, OP_LOAD_MEMBASE, vtable_reg, this_reg, MONO_STRUCT_OFFSET (MonoObject, vtable));
6812                 offset = ((gint32)slot - MONO_IMT_SIZE) * SIZEOF_VOID_P;
6813
6814                 /*
6815                  * The slot is already initialized when the vtable is created so there is no need
6816                  * to check it here.
6817                  */
6818
6819                 /* Load the imt slot, which contains a function descriptor. */
6820                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, slot_reg, vtable_reg, offset);
6821
6822                 /* Load the address + arg of the imt thunk from the imt slot */
6823                 EMIT_NEW_LOAD_MEMBASE (cfg, thunk_addr_ins, OP_LOAD_MEMBASE, addr_reg, slot_reg, 0);
6824                 EMIT_NEW_LOAD_MEMBASE (cfg, thunk_arg_ins, OP_LOAD_MEMBASE, arg_reg, slot_reg, SIZEOF_VOID_P);
6825                 /*
6826                  * IMT thunks in llvm-only mode are C functions which take an info argument
6827                  * plus the imt method and return the ftndesc to call.
6828                  */
6829                 icall_args [0] = thunk_arg_ins;
6830                 icall_args [1] = emit_get_rgctx_method (cfg, context_used,
6831                                                                                                 cmethod, MONO_RGCTX_INFO_METHOD);
6832                 ftndesc_ins = mini_emit_calli (cfg, helper_sig_llvmonly_imt_trampoline, icall_args, thunk_addr_ins, NULL, NULL);
6833
6834                 return emit_llvmonly_calli (cfg, fsig, sp, ftndesc_ins);
6835         }
6836
6837         if ((fsig->generic_param_count || variant_iface || special_array_interface) && !is_gsharedvt) {
6838                 /*
6839                  * This is similar to the interface case, the vtable slot points to an imt thunk which is
6840                  * dynamically extended as more instantiations are discovered.
6841                  * This handles generic virtual methods both on classes and interfaces.
6842                  */
6843                 int slot_reg = alloc_preg (cfg);
6844                 int addr_reg = alloc_preg (cfg);
6845                 int arg_reg = alloc_preg (cfg);
6846                 int ftndesc_reg = alloc_preg (cfg);
6847                 MonoInst *thunk_addr_ins, *thunk_arg_ins, *ftndesc_ins;
6848                 MonoBasicBlock *slowpath_bb, *end_bb;
6849
6850                 NEW_BBLOCK (cfg, slowpath_bb);
6851                 NEW_BBLOCK (cfg, end_bb);
6852
6853                 vtable_reg = alloc_preg (cfg);
6854                 EMIT_NEW_LOAD_MEMBASE (cfg, vtable_ins, OP_LOAD_MEMBASE, vtable_reg, this_reg, MONO_STRUCT_OFFSET (MonoObject, vtable));
6855                 if (is_iface)
6856                         offset = ((gint32)slot - MONO_IMT_SIZE) * SIZEOF_VOID_P;
6857                 else
6858                         offset = MONO_STRUCT_OFFSET (MonoVTable, vtable) + (slot * SIZEOF_VOID_P);
6859
6860                 /* Load the slot, which contains a function descriptor. */
6861                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, slot_reg, vtable_reg, offset);
6862
6863                 /* These slots are not initialized, so fall back to the slow path until they are initialized */
6864                 /* That happens when mono_method_add_generic_virtual_invocation () creates an IMT thunk */
6865                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, slot_reg, 0);
6866                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBEQ, slowpath_bb);
6867
6868                 /* Fastpath */
6869                 /* Same as with iface calls */
6870                 EMIT_NEW_LOAD_MEMBASE (cfg, thunk_addr_ins, OP_LOAD_MEMBASE, addr_reg, slot_reg, 0);
6871                 EMIT_NEW_LOAD_MEMBASE (cfg, thunk_arg_ins, OP_LOAD_MEMBASE, arg_reg, slot_reg, SIZEOF_VOID_P);
6872                 icall_args [0] = thunk_arg_ins;
6873                 icall_args [1] = emit_get_rgctx_method (cfg, context_used,
6874                                                                                                 cmethod, MONO_RGCTX_INFO_METHOD);
6875                 ftndesc_ins = mini_emit_calli (cfg, helper_sig_llvmonly_imt_trampoline, icall_args, thunk_addr_ins, NULL, NULL);
6876                 ftndesc_ins->dreg = ftndesc_reg;
6877                 /*
6878                  * Unlike normal iface calls, these imt thunks can return NULL, i.e. when they are passed an instantiation
6879                  * they don't know about yet. Fall back to the slowpath in that case.
6880                  */
6881                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, ftndesc_reg, 0);
6882                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBEQ, slowpath_bb);
6883
6884                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
6885
6886                 /* Slowpath */
6887                 MONO_START_BB (cfg, slowpath_bb);
6888                 icall_args [0] = vtable_ins;
6889                 EMIT_NEW_ICONST (cfg, icall_args [1], slot);
6890                 icall_args [2] = emit_get_rgctx_method (cfg, context_used,
6891                                                                                                 cmethod, MONO_RGCTX_INFO_METHOD);
6892                 if (is_iface)
6893                         ftndesc_ins = mono_emit_jit_icall (cfg, mono_resolve_generic_virtual_iface_call, icall_args);
6894                 else
6895                         ftndesc_ins = mono_emit_jit_icall (cfg, mono_resolve_generic_virtual_call, icall_args);
6896                 ftndesc_ins->dreg = ftndesc_reg;
6897                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
6898
6899                 /* Common case */
6900                 MONO_START_BB (cfg, end_bb);
6901                 return emit_llvmonly_calli (cfg, fsig, sp, ftndesc_ins);
6902         }
6903
6904         /*
6905          * Non-optimized cases
6906          */
6907         icall_args [0] = sp [0];
6908         EMIT_NEW_ICONST (cfg, icall_args [1], slot);
6909
6910         icall_args [2] = emit_get_rgctx_method (cfg, context_used,
6911                                                                                         cmethod, MONO_RGCTX_INFO_METHOD);
6912
6913         arg_reg = alloc_preg (cfg);
6914         MONO_EMIT_NEW_PCONST (cfg, arg_reg, NULL);
6915         EMIT_NEW_VARLOADA_VREG (cfg, icall_args [3], arg_reg, &mono_defaults.int_class->byval_arg);
6916
6917         g_assert (is_gsharedvt);
6918         if (is_iface)
6919                 call_target = mono_emit_jit_icall (cfg, mono_resolve_iface_call_gsharedvt, icall_args);
6920         else
6921                 call_target = mono_emit_jit_icall (cfg, mono_resolve_vcall_gsharedvt, icall_args);
6922
6923         /*
6924          * Pass the extra argument even if the callee doesn't receive it, most
6925          * calling conventions allow this.
6926          */
6927         return emit_extra_arg_calli (cfg, fsig, sp, arg_reg, call_target);
6928 }
6929
6930 static gboolean
6931 is_exception_class (MonoClass *klass)
6932 {
6933         while (klass) {
6934                 if (klass == mono_defaults.exception_class)
6935                         return TRUE;
6936                 klass = klass->parent;
6937         }
6938         return FALSE;
6939 }
6940
6941 /*
6942  * is_jit_optimizer_disabled:
6943  *
6944  *   Determine whenever M's assembly has a DebuggableAttribute with the
6945  * IsJITOptimizerDisabled flag set.
6946  */
6947 static gboolean
6948 is_jit_optimizer_disabled (MonoMethod *m)
6949 {
6950         MonoError error;
6951         MonoAssembly *ass = m->klass->image->assembly;
6952         MonoCustomAttrInfo* attrs;
6953         MonoClass *klass;
6954         int i;
6955         gboolean val = FALSE;
6956
6957         g_assert (ass);
6958         if (ass->jit_optimizer_disabled_inited)
6959                 return ass->jit_optimizer_disabled;
6960
6961         klass = mono_class_try_get_debuggable_attribute_class ();
6962
6963         if (!klass) {
6964                 /* Linked away */
6965                 ass->jit_optimizer_disabled = FALSE;
6966                 mono_memory_barrier ();
6967                 ass->jit_optimizer_disabled_inited = TRUE;
6968                 return FALSE;
6969         }
6970
6971         attrs = mono_custom_attrs_from_assembly_checked (ass, FALSE, &error);
6972         mono_error_cleanup (&error); /* FIXME don't swallow the error */
6973         if (attrs) {
6974                 for (i = 0; i < attrs->num_attrs; ++i) {
6975                         MonoCustomAttrEntry *attr = &attrs->attrs [i];
6976                         const gchar *p;
6977                         MonoMethodSignature *sig;
6978
6979                         if (!attr->ctor || attr->ctor->klass != klass)
6980                                 continue;
6981                         /* Decode the attribute. See reflection.c */
6982                         p = (const char*)attr->data;
6983                         g_assert (read16 (p) == 0x0001);
6984                         p += 2;
6985
6986                         // FIXME: Support named parameters
6987                         sig = mono_method_signature (attr->ctor);
6988                         if (sig->param_count != 2 || sig->params [0]->type != MONO_TYPE_BOOLEAN || sig->params [1]->type != MONO_TYPE_BOOLEAN)
6989                                 continue;
6990                         /* Two boolean arguments */
6991                         p ++;
6992                         val = *p;
6993                 }
6994                 mono_custom_attrs_free (attrs);
6995         }
6996
6997         ass->jit_optimizer_disabled = val;
6998         mono_memory_barrier ();
6999         ass->jit_optimizer_disabled_inited = TRUE;
7000
7001         return val;
7002 }
7003
7004 static gboolean
7005 is_supported_tail_call (MonoCompile *cfg, MonoMethod *method, MonoMethod *cmethod, MonoMethodSignature *fsig, int call_opcode)
7006 {
7007         gboolean supported_tail_call;
7008         int i;
7009
7010         supported_tail_call = mono_arch_tail_call_supported (cfg, mono_method_signature (method), mono_method_signature (cmethod));
7011
7012         for (i = 0; i < fsig->param_count; ++i) {
7013                 if (fsig->params [i]->byref || fsig->params [i]->type == MONO_TYPE_PTR || fsig->params [i]->type == MONO_TYPE_FNPTR)
7014                         /* These can point to the current method's stack */
7015                         supported_tail_call = FALSE;
7016         }
7017         if (fsig->hasthis && cmethod->klass->valuetype)
7018                 /* this might point to the current method's stack */
7019                 supported_tail_call = FALSE;
7020         if (cmethod->flags & METHOD_ATTRIBUTE_PINVOKE_IMPL)
7021                 supported_tail_call = FALSE;
7022         if (cfg->method->save_lmf)
7023                 supported_tail_call = FALSE;
7024         if (cmethod->wrapper_type && cmethod->wrapper_type != MONO_WRAPPER_DYNAMIC_METHOD)
7025                 supported_tail_call = FALSE;
7026         if (call_opcode != CEE_CALL)
7027                 supported_tail_call = FALSE;
7028
7029         /* Debugging support */
7030 #if 0
7031         if (supported_tail_call) {
7032                 if (!mono_debug_count ())
7033                         supported_tail_call = FALSE;
7034         }
7035 #endif
7036
7037         return supported_tail_call;
7038 }
7039
7040 /*
7041  * handle_ctor_call:
7042  *
7043  *   Handle calls made to ctors from NEWOBJ opcodes.
7044  */
7045 static void
7046 handle_ctor_call (MonoCompile *cfg, MonoMethod *cmethod, MonoMethodSignature *fsig, int context_used,
7047                                   MonoInst **sp, guint8 *ip, int *inline_costs)
7048 {
7049         MonoInst *vtable_arg = NULL, *callvirt_this_arg = NULL, *ins;
7050
7051         if (cmethod->klass->valuetype && mono_class_generic_sharing_enabled (cmethod->klass) &&
7052                                         mono_method_is_generic_sharable (cmethod, TRUE)) {
7053                 if (cmethod->is_inflated && mono_method_get_context (cmethod)->method_inst) {
7054                         mono_class_vtable (cfg->domain, cmethod->klass);
7055                         CHECK_TYPELOAD (cmethod->klass);
7056
7057                         vtable_arg = emit_get_rgctx_method (cfg, context_used,
7058                                                                                                 cmethod, MONO_RGCTX_INFO_METHOD_RGCTX);
7059                 } else {
7060                         if (context_used) {
7061                                 vtable_arg = mini_emit_get_rgctx_klass (cfg, context_used,
7062                                                                                                    cmethod->klass, MONO_RGCTX_INFO_VTABLE);
7063                         } else {
7064                                 MonoVTable *vtable = mono_class_vtable (cfg->domain, cmethod->klass);
7065
7066                                 CHECK_TYPELOAD (cmethod->klass);
7067                                 EMIT_NEW_VTABLECONST (cfg, vtable_arg, vtable);
7068                         }
7069                 }
7070         }
7071
7072         /* Avoid virtual calls to ctors if possible */
7073         if (mono_class_is_marshalbyref (cmethod->klass))
7074                 callvirt_this_arg = sp [0];
7075
7076         if (cmethod && (cfg->opt & MONO_OPT_INTRINS) && (ins = mini_emit_inst_for_ctor (cfg, cmethod, fsig, sp))) {
7077                 g_assert (MONO_TYPE_IS_VOID (fsig->ret));
7078                 CHECK_CFG_EXCEPTION;
7079         } else if ((cfg->opt & MONO_OPT_INLINE) && cmethod && !context_used && !vtable_arg &&
7080                            mono_method_check_inlining (cfg, cmethod) &&
7081                            !mono_class_is_subclass_of (cmethod->klass, mono_defaults.exception_class, FALSE)) {
7082                 int costs;
7083
7084                 if ((costs = inline_method (cfg, cmethod, fsig, sp, ip, cfg->real_offset, FALSE))) {
7085                         cfg->real_offset += 5;
7086
7087                         *inline_costs += costs - 5;
7088                 } else {
7089                         INLINE_FAILURE ("inline failure");
7090                         // FIXME-VT: Clean this up
7091                         if (cfg->gsharedvt && mini_is_gsharedvt_signature (fsig))
7092                                 GSHAREDVT_FAILURE(*ip);
7093                         mono_emit_method_call_full (cfg, cmethod, fsig, FALSE, sp, callvirt_this_arg, NULL, NULL);
7094                 }
7095         } else if (cfg->gsharedvt && mini_is_gsharedvt_signature (fsig)) {
7096                 MonoInst *addr;
7097
7098                 addr = emit_get_rgctx_gsharedvt_call (cfg, context_used, fsig, cmethod, MONO_RGCTX_INFO_METHOD_GSHAREDVT_OUT_TRAMPOLINE);
7099
7100                 if (cfg->llvm_only) {
7101                         // FIXME: Avoid initializing vtable_arg
7102                         emit_llvmonly_calli (cfg, fsig, sp, addr);
7103                 } else {
7104                         mini_emit_calli (cfg, fsig, sp, addr, NULL, vtable_arg);
7105                 }
7106         } else if (context_used &&
7107                            ((!mono_method_is_generic_sharable_full (cmethod, TRUE, FALSE, FALSE) ||
7108                                  !mono_class_generic_sharing_enabled (cmethod->klass)) || cfg->gsharedvt)) {
7109                 MonoInst *cmethod_addr;
7110
7111                 /* Generic calls made out of gsharedvt methods cannot be patched, so use an indirect call */
7112
7113                 if (cfg->llvm_only) {
7114                         MonoInst *addr = emit_get_rgctx_method (cfg, context_used, cmethod,
7115                                                                                                         MONO_RGCTX_INFO_GENERIC_METHOD_CODE);
7116                         emit_llvmonly_calli (cfg, fsig, sp, addr);
7117                 } else {
7118                         cmethod_addr = emit_get_rgctx_method (cfg, context_used,
7119                                                                                                   cmethod, MONO_RGCTX_INFO_GENERIC_METHOD_CODE);
7120
7121                         mini_emit_calli (cfg, fsig, sp, cmethod_addr, NULL, vtable_arg);
7122                 }
7123         } else {
7124                 INLINE_FAILURE ("ctor call");
7125                 ins = mono_emit_method_call_full (cfg, cmethod, fsig, FALSE, sp,
7126                                                                                   callvirt_this_arg, NULL, vtable_arg);
7127         }
7128  exception_exit:
7129         return;
7130 }
7131
7132 static void
7133 emit_setret (MonoCompile *cfg, MonoInst *val)
7134 {
7135         MonoType *ret_type = mini_get_underlying_type (mono_method_signature (cfg->method)->ret);
7136         MonoInst *ins;
7137
7138         if (mini_type_to_stind (cfg, ret_type) == CEE_STOBJ) {
7139                 MonoInst *ret_addr;
7140
7141                 if (!cfg->vret_addr) {
7142                         EMIT_NEW_VARSTORE (cfg, ins, cfg->ret, ret_type, val);
7143                 } else {
7144                         EMIT_NEW_RETLOADA (cfg, ret_addr);
7145
7146                         EMIT_NEW_STORE_MEMBASE (cfg, ins, OP_STOREV_MEMBASE, ret_addr->dreg, 0, val->dreg);
7147                         ins->klass = mono_class_from_mono_type (ret_type);
7148                 }
7149         } else {
7150 #ifdef MONO_ARCH_SOFT_FLOAT_FALLBACK
7151                 if (COMPILE_SOFT_FLOAT (cfg) && !ret_type->byref && ret_type->type == MONO_TYPE_R4) {
7152                         MonoInst *iargs [1];
7153                         MonoInst *conv;
7154
7155                         iargs [0] = val;
7156                         conv = mono_emit_jit_icall (cfg, mono_fload_r4_arg, iargs);
7157                         mono_arch_emit_setret (cfg, cfg->method, conv);
7158                 } else {
7159                         mono_arch_emit_setret (cfg, cfg->method, val);
7160                 }
7161 #else
7162                 mono_arch_emit_setret (cfg, cfg->method, val);
7163 #endif
7164         }
7165 }
7166
7167 /*
7168  * mono_method_to_ir:
7169  *
7170  * Translate the .net IL into linear IR.
7171  *
7172  * @start_bblock: if not NULL, the starting basic block, used during inlining.
7173  * @end_bblock: if not NULL, the ending basic block, used during inlining.
7174  * @return_var: if not NULL, the place where the return value is stored, used during inlining.
7175  * @inline_args: if not NULL, contains the arguments to the inline call
7176  * @inline_offset: if not zero, the real offset from the inline call, or zero otherwise.
7177  * @is_virtual_call: whether this method is being called as a result of a call to callvirt
7178  *
7179  * This method is used to turn ECMA IL into Mono's internal Linear IR
7180  * reprensetation.  It is used both for entire methods, as well as
7181  * inlining existing methods.  In the former case, the @start_bblock,
7182  * @end_bblock, @return_var, @inline_args are all set to NULL, and the
7183  * inline_offset is set to zero.
7184  *
7185  * Returns: the inline cost, or -1 if there was an error processing this method.
7186  */
7187 int
7188 mono_method_to_ir (MonoCompile *cfg, MonoMethod *method, MonoBasicBlock *start_bblock, MonoBasicBlock *end_bblock,
7189                    MonoInst *return_var, MonoInst **inline_args,
7190                    guint inline_offset, gboolean is_virtual_call)
7191 {
7192         MonoError error;
7193         MonoInst *ins, **sp, **stack_start;
7194         MonoBasicBlock *tblock = NULL, *init_localsbb = NULL;
7195         MonoSimpleBasicBlock *bb = NULL, *original_bb = NULL;
7196         MonoMethod *cmethod, *method_definition;
7197         MonoInst **arg_array;
7198         MonoMethodHeader *header;
7199         MonoImage *image;
7200         guint32 token, ins_flag;
7201         MonoClass *klass;
7202         MonoClass *constrained_class = NULL;
7203         unsigned char *ip, *end, *target, *err_pos;
7204         MonoMethodSignature *sig;
7205         MonoGenericContext *generic_context = NULL;
7206         MonoGenericContainer *generic_container = NULL;
7207         MonoType **param_types;
7208         int i, n, start_new_bblock, dreg;
7209         int num_calls = 0, inline_costs = 0;
7210         int breakpoint_id = 0;
7211         guint num_args;
7212         GSList *class_inits = NULL;
7213         gboolean dont_verify, dont_verify_stloc, readonly = FALSE;
7214         int context_used;
7215         gboolean init_locals, seq_points, skip_dead_blocks;
7216         gboolean sym_seq_points = FALSE;
7217         MonoDebugMethodInfo *minfo;
7218         MonoBitSet *seq_point_locs = NULL;
7219         MonoBitSet *seq_point_set_locs = NULL;
7220
7221         cfg->disable_inline = is_jit_optimizer_disabled (method);
7222
7223         /* serialization and xdomain stuff may need access to private fields and methods */
7224         dont_verify = method->klass->image->assembly->corlib_internal? TRUE: FALSE;
7225         dont_verify |= method->wrapper_type == MONO_WRAPPER_XDOMAIN_INVOKE;
7226         dont_verify |= method->wrapper_type == MONO_WRAPPER_XDOMAIN_DISPATCH;
7227         dont_verify |= method->wrapper_type == MONO_WRAPPER_MANAGED_TO_NATIVE; /* bug #77896 */
7228         dont_verify |= method->wrapper_type == MONO_WRAPPER_COMINTEROP;
7229         dont_verify |= method->wrapper_type == MONO_WRAPPER_COMINTEROP_INVOKE;
7230
7231         /* still some type unsafety issues in marshal wrappers... (unknown is PtrToStructure) */
7232         dont_verify_stloc = method->wrapper_type == MONO_WRAPPER_MANAGED_TO_NATIVE;
7233         dont_verify_stloc |= method->wrapper_type == MONO_WRAPPER_UNKNOWN;
7234         dont_verify_stloc |= method->wrapper_type == MONO_WRAPPER_NATIVE_TO_MANAGED;
7235         dont_verify_stloc |= method->wrapper_type == MONO_WRAPPER_STELEMREF;
7236
7237         image = method->klass->image;
7238         header = mono_method_get_header_checked (method, &cfg->error);
7239         if (!header) {
7240                 mono_cfg_set_exception (cfg, MONO_EXCEPTION_MONO_ERROR);
7241                 goto exception_exit;
7242         } else {
7243                 cfg->headers_to_free = g_slist_prepend_mempool (cfg->mempool, cfg->headers_to_free, header);
7244         }
7245
7246         generic_container = mono_method_get_generic_container (method);
7247         sig = mono_method_signature (method);
7248         num_args = sig->hasthis + sig->param_count;
7249         ip = (unsigned char*)header->code;
7250         cfg->cil_start = ip;
7251         end = ip + header->code_size;
7252         cfg->stat_cil_code_size += header->code_size;
7253
7254         seq_points = cfg->gen_seq_points && cfg->method == method;
7255
7256         if (method->wrapper_type == MONO_WRAPPER_NATIVE_TO_MANAGED) {
7257                 /* We could hit a seq point before attaching to the JIT (#8338) */
7258                 seq_points = FALSE;
7259         }
7260
7261         if (cfg->gen_sdb_seq_points && cfg->method == method) {
7262                 minfo = mono_debug_lookup_method (method);
7263                 if (minfo) {
7264                         MonoSymSeqPoint *sps;
7265                         int i, n_il_offsets;
7266
7267                         mono_debug_get_seq_points (minfo, NULL, NULL, NULL, &sps, &n_il_offsets);
7268                         seq_point_locs = mono_bitset_mem_new (mono_mempool_alloc0 (cfg->mempool, mono_bitset_alloc_size (header->code_size, 0)), header->code_size, 0);
7269                         seq_point_set_locs = mono_bitset_mem_new (mono_mempool_alloc0 (cfg->mempool, mono_bitset_alloc_size (header->code_size, 0)), header->code_size, 0);
7270                         sym_seq_points = TRUE;
7271                         for (i = 0; i < n_il_offsets; ++i) {
7272                                 if (sps [i].il_offset < header->code_size)
7273                                         mono_bitset_set_fast (seq_point_locs, sps [i].il_offset);
7274                         }
7275                         g_free (sps);
7276
7277                         MonoDebugMethodAsyncInfo* asyncMethod = mono_debug_lookup_method_async_debug_info (method);
7278                         if (asyncMethod) {
7279                                 for (i = 0; asyncMethod != NULL && i < asyncMethod->num_awaits; i++)
7280                                 {
7281                                         mono_bitset_set_fast (seq_point_locs, asyncMethod->resume_offsets[i]);
7282                                         mono_bitset_set_fast (seq_point_locs, asyncMethod->yield_offsets[i]);
7283                                 }
7284                                 mono_debug_free_method_async_debug_info (asyncMethod);
7285                         }
7286                 } else if (!method->wrapper_type && !method->dynamic && mono_debug_image_has_debug_info (method->klass->image)) {
7287                         /* Methods without line number info like auto-generated property accessors */
7288                         seq_point_locs = mono_bitset_mem_new (mono_mempool_alloc0 (cfg->mempool, mono_bitset_alloc_size (header->code_size, 0)), header->code_size, 0);
7289                         seq_point_set_locs = mono_bitset_mem_new (mono_mempool_alloc0 (cfg->mempool, mono_bitset_alloc_size (header->code_size, 0)), header->code_size, 0);
7290                         sym_seq_points = TRUE;
7291                 }
7292         }
7293
7294         /*
7295          * Methods without init_locals set could cause asserts in various passes
7296          * (#497220). To work around this, we emit dummy initialization opcodes
7297          * (OP_DUMMY_ICONST etc.) which generate no code. These are only supported
7298          * on some platforms.
7299          */
7300         if ((cfg->opt & MONO_OPT_UNSAFE) && cfg->backend->have_dummy_init)
7301                 init_locals = header->init_locals;
7302         else
7303                 init_locals = TRUE;
7304
7305         method_definition = method;
7306         while (method_definition->is_inflated) {
7307                 MonoMethodInflated *imethod = (MonoMethodInflated *) method_definition;
7308                 method_definition = imethod->declaring;
7309         }
7310
7311         /* SkipVerification is not allowed if core-clr is enabled */
7312         if (!dont_verify && mini_assembly_can_skip_verification (cfg->domain, method)) {
7313                 dont_verify = TRUE;
7314                 dont_verify_stloc = TRUE;
7315         }
7316
7317         if (sig->is_inflated)
7318                 generic_context = mono_method_get_context (method);
7319         else if (generic_container)
7320                 generic_context = &generic_container->context;
7321         cfg->generic_context = generic_context;
7322
7323         if (!cfg->gshared)
7324                 g_assert (!sig->has_type_parameters);
7325
7326         if (sig->generic_param_count && method->wrapper_type == MONO_WRAPPER_NONE) {
7327                 g_assert (method->is_inflated);
7328                 g_assert (mono_method_get_context (method)->method_inst);
7329         }
7330         if (method->is_inflated && mono_method_get_context (method)->method_inst)
7331                 g_assert (sig->generic_param_count);
7332
7333         if (cfg->method == method) {
7334                 cfg->real_offset = 0;
7335         } else {
7336                 cfg->real_offset = inline_offset;
7337         }
7338
7339         cfg->cil_offset_to_bb = (MonoBasicBlock **)mono_mempool_alloc0 (cfg->mempool, sizeof (MonoBasicBlock*) * header->code_size);
7340         cfg->cil_offset_to_bb_len = header->code_size;
7341
7342         cfg->current_method = method;
7343
7344         if (cfg->verbose_level > 2)
7345                 printf ("method to IR %s\n", mono_method_full_name (method, TRUE));
7346
7347         param_types = (MonoType **)mono_mempool_alloc (cfg->mempool, sizeof (MonoType*) * num_args);
7348         if (sig->hasthis)
7349                 param_types [0] = method->klass->valuetype?&method->klass->this_arg:&method->klass->byval_arg;
7350         for (n = 0; n < sig->param_count; ++n)
7351                 param_types [n + sig->hasthis] = sig->params [n];
7352         cfg->arg_types = param_types;
7353
7354         cfg->dont_inline = g_list_prepend (cfg->dont_inline, method);
7355         if (cfg->method == method) {
7356
7357                 cfg->coverage_info = mono_profiler_coverage_alloc (cfg->method, header->code_size);
7358
7359                 /* ENTRY BLOCK */
7360                 NEW_BBLOCK (cfg, start_bblock);
7361                 cfg->bb_entry = start_bblock;
7362                 start_bblock->cil_code = NULL;
7363                 start_bblock->cil_length = 0;
7364
7365                 /* EXIT BLOCK */
7366                 NEW_BBLOCK (cfg, end_bblock);
7367                 cfg->bb_exit = end_bblock;
7368                 end_bblock->cil_code = NULL;
7369                 end_bblock->cil_length = 0;
7370                 end_bblock->flags |= BB_INDIRECT_JUMP_TARGET;
7371                 g_assert (cfg->num_bblocks == 2);
7372
7373                 arg_array = cfg->args;
7374
7375                 if (header->num_clauses) {
7376                         cfg->spvars = g_hash_table_new (NULL, NULL);
7377                         cfg->exvars = g_hash_table_new (NULL, NULL);
7378                 }
7379                 /* handle exception clauses */
7380                 for (i = 0; i < header->num_clauses; ++i) {
7381                         MonoBasicBlock *try_bb;
7382                         MonoExceptionClause *clause = &header->clauses [i];
7383                         GET_BBLOCK (cfg, try_bb, ip + clause->try_offset);
7384
7385                         try_bb->real_offset = clause->try_offset;
7386                         try_bb->try_start = TRUE;
7387                         try_bb->region = ((i + 1) << 8) | clause->flags;
7388                         GET_BBLOCK (cfg, tblock, ip + clause->handler_offset);
7389                         tblock->real_offset = clause->handler_offset;
7390                         tblock->flags |= BB_EXCEPTION_HANDLER;
7391
7392                         if (clause->flags == MONO_EXCEPTION_CLAUSE_FINALLY)
7393                                 mono_create_exvar_for_offset (cfg, clause->handler_offset);
7394                         /*
7395                          * Linking the try block with the EH block hinders inlining as we won't be able to
7396                          * merge the bblocks from inlining and produce an artificial hole for no good reason.
7397                          */
7398                         if (COMPILE_LLVM (cfg))
7399                                 link_bblock (cfg, try_bb, tblock);
7400
7401                         if (*(ip + clause->handler_offset) == CEE_POP)
7402                                 tblock->flags |= BB_EXCEPTION_DEAD_OBJ;
7403
7404                         if (clause->flags == MONO_EXCEPTION_CLAUSE_FINALLY ||
7405                             clause->flags == MONO_EXCEPTION_CLAUSE_FILTER ||
7406                             clause->flags == MONO_EXCEPTION_CLAUSE_FAULT) {
7407                                 MONO_INST_NEW (cfg, ins, OP_START_HANDLER);
7408                                 MONO_ADD_INS (tblock, ins);
7409
7410                                 if (seq_points && clause->flags != MONO_EXCEPTION_CLAUSE_FINALLY && clause->flags != MONO_EXCEPTION_CLAUSE_FILTER) {
7411                                         /* finally clauses already have a seq point */
7412                                         /* seq points for filter clauses are emitted below */
7413                                         NEW_SEQ_POINT (cfg, ins, clause->handler_offset, TRUE);
7414                                         MONO_ADD_INS (tblock, ins);
7415                                 }
7416
7417                                 /* todo: is a fault block unsafe to optimize? */
7418                                 if (clause->flags == MONO_EXCEPTION_CLAUSE_FAULT)
7419                                         tblock->flags |= BB_EXCEPTION_UNSAFE;
7420                         }
7421
7422                         /*printf ("clause try IL_%04x to IL_%04x handler %d at IL_%04x to IL_%04x\n", clause->try_offset, clause->try_offset + clause->try_len, clause->flags, clause->handler_offset, clause->handler_offset + clause->handler_len);
7423                           while (p < end) {
7424                           printf ("%s", mono_disasm_code_one (NULL, method, p, &p));
7425                           }*/
7426                         /* catch and filter blocks get the exception object on the stack */
7427                         if (clause->flags == MONO_EXCEPTION_CLAUSE_NONE ||
7428                             clause->flags == MONO_EXCEPTION_CLAUSE_FILTER) {
7429
7430                                 /* mostly like handle_stack_args (), but just sets the input args */
7431                                 /* printf ("handling clause at IL_%04x\n", clause->handler_offset); */
7432                                 tblock->in_scount = 1;
7433                                 tblock->in_stack = (MonoInst **)mono_mempool_alloc (cfg->mempool, sizeof (MonoInst*));
7434                                 tblock->in_stack [0] = mono_create_exvar_for_offset (cfg, clause->handler_offset);
7435
7436                                 cfg->cbb = tblock;
7437
7438 #ifdef MONO_CONTEXT_SET_LLVM_EXC_REG
7439                                 /* The EH code passes in the exception in a register to both JITted and LLVM compiled code */
7440                                 if (!cfg->compile_llvm) {
7441                                         MONO_INST_NEW (cfg, ins, OP_GET_EX_OBJ);
7442                                         ins->dreg = tblock->in_stack [0]->dreg;
7443                                         MONO_ADD_INS (tblock, ins);
7444                                 }
7445 #else
7446                                 MonoInst *dummy_use;
7447
7448                                 /*
7449                                  * Add a dummy use for the exvar so its liveness info will be
7450                                  * correct.
7451                                  */
7452                                 EMIT_NEW_DUMMY_USE (cfg, dummy_use, tblock->in_stack [0]);
7453 #endif
7454
7455                                 if (seq_points && clause->flags == MONO_EXCEPTION_CLAUSE_FILTER) {
7456                                         NEW_SEQ_POINT (cfg, ins, clause->handler_offset, TRUE);
7457                                         MONO_ADD_INS (tblock, ins);
7458                                 }
7459
7460                                 if (clause->flags == MONO_EXCEPTION_CLAUSE_FILTER) {
7461                                         GET_BBLOCK (cfg, tblock, ip + clause->data.filter_offset);
7462                                         tblock->flags |= BB_EXCEPTION_HANDLER;
7463                                         tblock->real_offset = clause->data.filter_offset;
7464                                         tblock->in_scount = 1;
7465                                         tblock->in_stack = (MonoInst **)mono_mempool_alloc (cfg->mempool, sizeof (MonoInst*));
7466                                         /* The filter block shares the exvar with the handler block */
7467                                         tblock->in_stack [0] = mono_create_exvar_for_offset (cfg, clause->handler_offset);
7468                                         MONO_INST_NEW (cfg, ins, OP_START_HANDLER);
7469                                         MONO_ADD_INS (tblock, ins);
7470                                 }
7471                         }
7472
7473                         if (clause->flags != MONO_EXCEPTION_CLAUSE_FILTER &&
7474                                         clause->data.catch_class &&
7475                                         cfg->gshared &&
7476                                         mono_class_check_context_used (clause->data.catch_class)) {
7477                                 /*
7478                                  * In shared generic code with catch
7479                                  * clauses containing type variables
7480                                  * the exception handling code has to
7481                                  * be able to get to the rgctx.
7482                                  * Therefore we have to make sure that
7483                                  * the vtable/mrgctx argument (for
7484                                  * static or generic methods) or the
7485                                  * "this" argument (for non-static
7486                                  * methods) are live.
7487                                  */
7488                                 if ((method->flags & METHOD_ATTRIBUTE_STATIC) ||
7489                                                 mini_method_get_context (method)->method_inst ||
7490                                                 method->klass->valuetype) {
7491                                         mono_get_vtable_var (cfg);
7492                                 } else {
7493                                         MonoInst *dummy_use;
7494
7495                                         EMIT_NEW_DUMMY_USE (cfg, dummy_use, arg_array [0]);
7496                                 }
7497                         }
7498                 }
7499         } else {
7500                 arg_array = (MonoInst **) alloca (sizeof (MonoInst *) * num_args);
7501                 cfg->cbb = start_bblock;
7502                 cfg->args = arg_array;
7503                 mono_save_args (cfg, sig, inline_args);
7504         }
7505
7506         /* FIRST CODE BLOCK */
7507         NEW_BBLOCK (cfg, tblock);
7508         tblock->cil_code = ip;
7509         cfg->cbb = tblock;
7510         cfg->ip = ip;
7511
7512         ADD_BBLOCK (cfg, tblock);
7513
7514         if (cfg->method == method) {
7515                 breakpoint_id = mono_debugger_method_has_breakpoint (method);
7516                 if (breakpoint_id) {
7517                         MONO_INST_NEW (cfg, ins, OP_BREAK);
7518                         MONO_ADD_INS (cfg->cbb, ins);
7519                 }
7520         }
7521
7522         /* we use a separate basic block for the initialization code */
7523         NEW_BBLOCK (cfg, init_localsbb);
7524         if (cfg->method == method)
7525                 cfg->bb_init = init_localsbb;
7526         init_localsbb->real_offset = cfg->real_offset;
7527         start_bblock->next_bb = init_localsbb;
7528         init_localsbb->next_bb = cfg->cbb;
7529         link_bblock (cfg, start_bblock, init_localsbb);
7530         link_bblock (cfg, init_localsbb, cfg->cbb);
7531
7532         cfg->cbb = init_localsbb;
7533
7534         if (cfg->gsharedvt && cfg->method == method) {
7535                 MonoGSharedVtMethodInfo *info;
7536                 MonoInst *var, *locals_var;
7537                 int dreg;
7538
7539                 info = (MonoGSharedVtMethodInfo *)mono_mempool_alloc0 (cfg->mempool, sizeof (MonoGSharedVtMethodInfo));
7540                 info->method = cfg->method;
7541                 info->count_entries = 16;
7542                 info->entries = (MonoRuntimeGenericContextInfoTemplate *)mono_mempool_alloc0 (cfg->mempool, sizeof (MonoRuntimeGenericContextInfoTemplate) * info->count_entries);
7543                 cfg->gsharedvt_info = info;
7544
7545                 var = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
7546                 /* prevent it from being register allocated */
7547                 //var->flags |= MONO_INST_VOLATILE;
7548                 cfg->gsharedvt_info_var = var;
7549
7550                 ins = emit_get_rgctx_gsharedvt_method (cfg, mini_method_check_context_used (cfg, method), method, info);
7551                 MONO_EMIT_NEW_UNALU (cfg, OP_MOVE, var->dreg, ins->dreg);
7552
7553                 /* Allocate locals */
7554                 locals_var = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
7555                 /* prevent it from being register allocated */
7556                 //locals_var->flags |= MONO_INST_VOLATILE;
7557                 cfg->gsharedvt_locals_var = locals_var;
7558
7559                 dreg = alloc_ireg (cfg);
7560                 MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADI4_MEMBASE, dreg, var->dreg, MONO_STRUCT_OFFSET (MonoGSharedVtMethodRuntimeInfo, locals_size));
7561
7562                 MONO_INST_NEW (cfg, ins, OP_LOCALLOC);
7563                 ins->dreg = locals_var->dreg;
7564                 ins->sreg1 = dreg;
7565                 MONO_ADD_INS (cfg->cbb, ins);
7566                 cfg->gsharedvt_locals_var_ins = ins;
7567
7568                 cfg->flags |= MONO_CFG_HAS_ALLOCA;
7569                 /*
7570                 if (init_locals)
7571                         ins->flags |= MONO_INST_INIT;
7572                 */
7573         }
7574
7575         if (mono_security_core_clr_enabled ()) {
7576                 /* check if this is native code, e.g. an icall or a p/invoke */
7577                 if (method->wrapper_type == MONO_WRAPPER_MANAGED_TO_NATIVE) {
7578                         MonoMethod *wrapped = mono_marshal_method_from_wrapper (method);
7579                         if (wrapped) {
7580                                 gboolean pinvk = (wrapped->flags & METHOD_ATTRIBUTE_PINVOKE_IMPL);
7581                                 gboolean icall = (wrapped->iflags & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL);
7582
7583                                 /* if this ia a native call then it can only be JITted from platform code */
7584                                 if ((icall || pinvk) && method->klass && method->klass->image) {
7585                                         if (!mono_security_core_clr_is_platform_image (method->klass->image)) {
7586                                                 MonoException *ex = icall ? mono_get_exception_security () :
7587                                                         mono_get_exception_method_access ();
7588                                                 emit_throw_exception (cfg, ex);
7589                                         }
7590                                 }
7591                         }
7592                 }
7593         }
7594
7595         CHECK_CFG_EXCEPTION;
7596
7597         if (header->code_size == 0)
7598                 UNVERIFIED;
7599
7600         if (get_basic_blocks (cfg, header, cfg->real_offset, ip, end, &err_pos)) {
7601                 ip = err_pos;
7602                 UNVERIFIED;
7603         }
7604
7605         if (cfg->method == method)
7606                 mono_debug_init_method (cfg, cfg->cbb, breakpoint_id);
7607
7608         for (n = 0; n < header->num_locals; ++n) {
7609                 if (header->locals [n]->type == MONO_TYPE_VOID && !header->locals [n]->byref)
7610                         UNVERIFIED;
7611         }
7612         class_inits = NULL;
7613
7614         /* We force the vtable variable here for all shared methods
7615            for the possibility that they might show up in a stack
7616            trace where their exact instantiation is needed. */
7617         if (cfg->gshared && method == cfg->method) {
7618                 if ((method->flags & METHOD_ATTRIBUTE_STATIC) ||
7619                                 mini_method_get_context (method)->method_inst ||
7620                                 method->klass->valuetype) {
7621                         mono_get_vtable_var (cfg);
7622                 } else {
7623                         /* FIXME: Is there a better way to do this?
7624                            We need the variable live for the duration
7625                            of the whole method. */
7626                         cfg->args [0]->flags |= MONO_INST_VOLATILE;
7627                 }
7628         }
7629
7630         /* add a check for this != NULL to inlined methods */
7631         if (is_virtual_call) {
7632                 MonoInst *arg_ins;
7633
7634                 NEW_ARGLOAD (cfg, arg_ins, 0);
7635                 MONO_ADD_INS (cfg->cbb, arg_ins);
7636                 MONO_EMIT_NEW_CHECK_THIS (cfg, arg_ins->dreg);
7637         }
7638
7639         skip_dead_blocks = !dont_verify;
7640         if (skip_dead_blocks) {
7641                 original_bb = bb = mono_basic_block_split (method, &cfg->error, header);
7642                 CHECK_CFG_ERROR;
7643                 g_assert (bb);
7644         }
7645
7646         /* we use a spare stack slot in SWITCH and NEWOBJ and others */
7647         stack_start = sp = (MonoInst **)mono_mempool_alloc0 (cfg->mempool, sizeof (MonoInst*) * (header->max_stack + 1));
7648
7649         ins_flag = 0;
7650         start_new_bblock = 0;
7651         while (ip < end) {
7652                 if (cfg->method == method)
7653                         cfg->real_offset = ip - header->code;
7654                 else
7655                         cfg->real_offset = inline_offset;
7656                 cfg->ip = ip;
7657
7658                 context_used = 0;
7659
7660                 if (start_new_bblock) {
7661                         cfg->cbb->cil_length = ip - cfg->cbb->cil_code;
7662                         if (start_new_bblock == 2) {
7663                                 g_assert (ip == tblock->cil_code);
7664                         } else {
7665                                 GET_BBLOCK (cfg, tblock, ip);
7666                         }
7667                         cfg->cbb->next_bb = tblock;
7668                         cfg->cbb = tblock;
7669                         start_new_bblock = 0;
7670                         for (i = 0; i < cfg->cbb->in_scount; ++i) {
7671                                 if (cfg->verbose_level > 3)
7672                                         printf ("loading %d from temp %d\n", i, (int)cfg->cbb->in_stack [i]->inst_c0);
7673                                 EMIT_NEW_TEMPLOAD (cfg, ins, cfg->cbb->in_stack [i]->inst_c0);
7674                                 *sp++ = ins;
7675                         }
7676                         if (class_inits)
7677                                 g_slist_free (class_inits);
7678                         class_inits = NULL;
7679                 } else {
7680                         if ((tblock = cfg->cil_offset_to_bb [ip - cfg->cil_start]) && (tblock != cfg->cbb)) {
7681                                 link_bblock (cfg, cfg->cbb, tblock);
7682                                 if (sp != stack_start) {
7683                                         handle_stack_args (cfg, stack_start, sp - stack_start);
7684                                         sp = stack_start;
7685                                         CHECK_UNVERIFIABLE (cfg);
7686                                 }
7687                                 cfg->cbb->next_bb = tblock;
7688                                 cfg->cbb = tblock;
7689                                 for (i = 0; i < cfg->cbb->in_scount; ++i) {
7690                                         if (cfg->verbose_level > 3)
7691                                                 printf ("loading %d from temp %d\n", i, (int)cfg->cbb->in_stack [i]->inst_c0);
7692                                         EMIT_NEW_TEMPLOAD (cfg, ins, cfg->cbb->in_stack [i]->inst_c0);
7693                                         *sp++ = ins;
7694                                 }
7695                                 g_slist_free (class_inits);
7696                                 class_inits = NULL;
7697                         }
7698                 }
7699
7700                 if (skip_dead_blocks) {
7701                         int ip_offset = ip - header->code;
7702
7703                         if (ip_offset == bb->end)
7704                                 bb = bb->next;
7705
7706                         if (bb->dead) {
7707                                 int op_size = mono_opcode_size (ip, end);
7708                                 g_assert (op_size > 0); /*The BB formation pass must catch all bad ops*/
7709
7710                                 if (cfg->verbose_level > 3) printf ("SKIPPING DEAD OP at %x\n", ip_offset);
7711
7712                                 if (ip_offset + op_size == bb->end) {
7713                                         MONO_INST_NEW (cfg, ins, OP_NOP);
7714                                         MONO_ADD_INS (cfg->cbb, ins);
7715                                         start_new_bblock = 1;
7716                                 }
7717
7718                                 ip += op_size;
7719                                 continue;
7720                         }
7721                 }
7722                 /*
7723                  * Sequence points are points where the debugger can place a breakpoint.
7724                  * Currently, we generate these automatically at points where the IL
7725                  * stack is empty.
7726                  */
7727                 if (seq_points && ((!sym_seq_points && (sp == stack_start)) || (sym_seq_points && mono_bitset_test_fast (seq_point_locs, ip - header->code)))) {
7728                         /*
7729                          * Make methods interruptable at the beginning, and at the targets of
7730                          * backward branches.
7731                          * Also, do this at the start of every bblock in methods with clauses too,
7732                          * to be able to handle instructions with inprecise control flow like
7733                          * throw/endfinally.
7734                          * Backward branches are handled at the end of method-to-ir ().
7735                          */
7736                         gboolean intr_loc = ip == header->code || (!cfg->cbb->last_ins && cfg->header->num_clauses);
7737                         gboolean sym_seq_point = sym_seq_points && mono_bitset_test_fast (seq_point_locs, ip - header->code);
7738
7739                         /* Avoid sequence points on empty IL like .volatile */
7740                         // FIXME: Enable this
7741                         //if (!(cfg->cbb->last_ins && cfg->cbb->last_ins->opcode == OP_SEQ_POINT)) {
7742                         NEW_SEQ_POINT (cfg, ins, ip - header->code, intr_loc);
7743                         if ((sp != stack_start) && !sym_seq_point)
7744                                 ins->flags |= MONO_INST_NONEMPTY_STACK;
7745                         MONO_ADD_INS (cfg->cbb, ins);
7746
7747                         if (sym_seq_points)
7748                                 mono_bitset_set_fast (seq_point_set_locs, ip - header->code);
7749                 }
7750
7751                 cfg->cbb->real_offset = cfg->real_offset;
7752
7753                 if ((cfg->method == method) && cfg->coverage_info) {
7754                         guint32 cil_offset = ip - header->code;
7755                         gpointer counter = &cfg->coverage_info->data [cil_offset].count;
7756                         cfg->coverage_info->data [cil_offset].cil_code = ip;
7757
7758                         if (mono_arch_opcode_supported (OP_ATOMIC_ADD_I4)) {
7759                                 MonoInst *one_ins, *load_ins;
7760
7761                                 EMIT_NEW_PCONST (cfg, load_ins, counter);
7762                                 EMIT_NEW_ICONST (cfg, one_ins, 1);
7763                                 MONO_INST_NEW (cfg, ins, OP_ATOMIC_ADD_I4);
7764                                 ins->dreg = mono_alloc_ireg (cfg);
7765                                 ins->inst_basereg = load_ins->dreg;
7766                                 ins->inst_offset = 0;
7767                                 ins->sreg2 = one_ins->dreg;
7768                                 ins->type = STACK_I4;
7769                                 MONO_ADD_INS (cfg->cbb, ins);
7770                         } else {
7771                                 EMIT_NEW_PCONST (cfg, ins, counter);
7772                                 MONO_EMIT_NEW_STORE_MEMBASE_IMM (cfg, OP_STORE_MEMBASE_IMM, ins->dreg, 0, 1);
7773                         }
7774                 }
7775
7776                 if (cfg->verbose_level > 3)
7777                         printf ("converting (in B%d: stack: %d) %s", cfg->cbb->block_num, (int)(sp - stack_start), mono_disasm_code_one (NULL, method, ip, NULL));
7778
7779                 switch (*ip) {
7780                 case CEE_NOP:
7781                         if (seq_points && !sym_seq_points && sp != stack_start) {
7782                                 /*
7783                                  * The C# compiler uses these nops to notify the JIT that it should
7784                                  * insert seq points.
7785                                  */
7786                                 NEW_SEQ_POINT (cfg, ins, ip - header->code, FALSE);
7787                                 MONO_ADD_INS (cfg->cbb, ins);
7788                         }
7789                         if (cfg->keep_cil_nops)
7790                                 MONO_INST_NEW (cfg, ins, OP_HARD_NOP);
7791                         else
7792                                 MONO_INST_NEW (cfg, ins, OP_NOP);
7793                         ip++;
7794                         MONO_ADD_INS (cfg->cbb, ins);
7795                         break;
7796                 case CEE_BREAK:
7797                         if (mini_should_insert_breakpoint (cfg->method)) {
7798                                 ins = mono_emit_jit_icall (cfg, mono_debugger_agent_user_break, NULL);
7799                         } else {
7800                                 MONO_INST_NEW (cfg, ins, OP_NOP);
7801                         }
7802                         ip++;
7803                         MONO_ADD_INS (cfg->cbb, ins);
7804                         break;
7805                 case CEE_LDARG_0:
7806                 case CEE_LDARG_1:
7807                 case CEE_LDARG_2:
7808                 case CEE_LDARG_3:
7809                         CHECK_STACK_OVF (1);
7810                         n = (*ip)-CEE_LDARG_0;
7811                         CHECK_ARG (n);
7812                         EMIT_NEW_ARGLOAD (cfg, ins, n);
7813                         ip++;
7814                         *sp++ = ins;
7815                         break;
7816                 case CEE_LDLOC_0:
7817                 case CEE_LDLOC_1:
7818                 case CEE_LDLOC_2:
7819                 case CEE_LDLOC_3:
7820                         CHECK_STACK_OVF (1);
7821                         n = (*ip)-CEE_LDLOC_0;
7822                         CHECK_LOCAL (n);
7823                         EMIT_NEW_LOCLOAD (cfg, ins, n);
7824                         ip++;
7825                         *sp++ = ins;
7826                         break;
7827                 case CEE_STLOC_0:
7828                 case CEE_STLOC_1:
7829                 case CEE_STLOC_2:
7830                 case CEE_STLOC_3: {
7831                         CHECK_STACK (1);
7832                         n = (*ip)-CEE_STLOC_0;
7833                         CHECK_LOCAL (n);
7834                         --sp;
7835                         if (!dont_verify_stloc && target_type_is_incompatible (cfg, header->locals [n], *sp))
7836                                 UNVERIFIED;
7837                         emit_stloc_ir (cfg, sp, header, n);
7838                         ++ip;
7839                         inline_costs += 1;
7840                         break;
7841                         }
7842                 case CEE_LDARG_S:
7843                         CHECK_OPSIZE (2);
7844                         CHECK_STACK_OVF (1);
7845                         n = ip [1];
7846                         CHECK_ARG (n);
7847                         EMIT_NEW_ARGLOAD (cfg, ins, n);
7848                         *sp++ = ins;
7849                         ip += 2;
7850                         break;
7851                 case CEE_LDARGA_S:
7852                         CHECK_OPSIZE (2);
7853                         CHECK_STACK_OVF (1);
7854                         n = ip [1];
7855                         CHECK_ARG (n);
7856                         NEW_ARGLOADA (cfg, ins, n);
7857                         MONO_ADD_INS (cfg->cbb, ins);
7858                         *sp++ = ins;
7859                         ip += 2;
7860                         break;
7861                 case CEE_STARG_S:
7862                         CHECK_OPSIZE (2);
7863                         CHECK_STACK (1);
7864                         --sp;
7865                         n = ip [1];
7866                         CHECK_ARG (n);
7867                         if (!dont_verify_stloc && target_type_is_incompatible (cfg, param_types [ip [1]], *sp))
7868                                 UNVERIFIED;
7869                         EMIT_NEW_ARGSTORE (cfg, ins, n, *sp);
7870                         ip += 2;
7871                         break;
7872                 case CEE_LDLOC_S:
7873                         CHECK_OPSIZE (2);
7874                         CHECK_STACK_OVF (1);
7875                         n = ip [1];
7876                         CHECK_LOCAL (n);
7877                         if ((ip [2] == CEE_LDFLD) && ip_in_bb (cfg, cfg->cbb, ip + 2) && MONO_TYPE_ISSTRUCT (header->locals [n])) {
7878                                 /* Avoid loading a struct just to load one of its fields */
7879                                 EMIT_NEW_LOCLOADA (cfg, ins, n);
7880                         } else {
7881                                 EMIT_NEW_LOCLOAD (cfg, ins, n);
7882                         }
7883                         *sp++ = ins;
7884                         ip += 2;
7885                         break;
7886                 case CEE_LDLOCA_S: {
7887                         unsigned char *tmp_ip;
7888                         CHECK_OPSIZE (2);
7889                         CHECK_STACK_OVF (1);
7890                         CHECK_LOCAL (ip [1]);
7891
7892                         if ((tmp_ip = emit_optimized_ldloca_ir (cfg, ip, end, 1))) {
7893                                 ip = tmp_ip;
7894                                 inline_costs += 1;
7895                                 break;
7896                         }
7897
7898                         EMIT_NEW_LOCLOADA (cfg, ins, ip [1]);
7899                         *sp++ = ins;
7900                         ip += 2;
7901                         break;
7902                 }
7903                 case CEE_STLOC_S:
7904                         CHECK_OPSIZE (2);
7905                         CHECK_STACK (1);
7906                         --sp;
7907                         CHECK_LOCAL (ip [1]);
7908                         if (!dont_verify_stloc && target_type_is_incompatible (cfg, header->locals [ip [1]], *sp))
7909                                 UNVERIFIED;
7910                         emit_stloc_ir (cfg, sp, header, ip [1]);
7911                         ip += 2;
7912                         inline_costs += 1;
7913                         break;
7914                 case CEE_LDNULL:
7915                         CHECK_STACK_OVF (1);
7916                         EMIT_NEW_PCONST (cfg, ins, NULL);
7917                         ins->type = STACK_OBJ;
7918                         ++ip;
7919                         *sp++ = ins;
7920                         break;
7921                 case CEE_LDC_I4_M1:
7922                         CHECK_STACK_OVF (1);
7923                         EMIT_NEW_ICONST (cfg, ins, -1);
7924                         ++ip;
7925                         *sp++ = ins;
7926                         break;
7927                 case CEE_LDC_I4_0:
7928                 case CEE_LDC_I4_1:
7929                 case CEE_LDC_I4_2:
7930                 case CEE_LDC_I4_3:
7931                 case CEE_LDC_I4_4:
7932                 case CEE_LDC_I4_5:
7933                 case CEE_LDC_I4_6:
7934                 case CEE_LDC_I4_7:
7935                 case CEE_LDC_I4_8:
7936                         CHECK_STACK_OVF (1);
7937                         EMIT_NEW_ICONST (cfg, ins, (*ip) - CEE_LDC_I4_0);
7938                         ++ip;
7939                         *sp++ = ins;
7940                         break;
7941                 case CEE_LDC_I4_S:
7942                         CHECK_OPSIZE (2);
7943                         CHECK_STACK_OVF (1);
7944                         ++ip;
7945                         EMIT_NEW_ICONST (cfg, ins, *((signed char*)ip));
7946                         ++ip;
7947                         *sp++ = ins;
7948                         break;
7949                 case CEE_LDC_I4:
7950                         CHECK_OPSIZE (5);
7951                         CHECK_STACK_OVF (1);
7952                         EMIT_NEW_ICONST (cfg, ins, (gint32)read32 (ip + 1));
7953                         ip += 5;
7954                         *sp++ = ins;
7955                         break;
7956                 case CEE_LDC_I8:
7957                         CHECK_OPSIZE (9);
7958                         CHECK_STACK_OVF (1);
7959                         MONO_INST_NEW (cfg, ins, OP_I8CONST);
7960                         ins->type = STACK_I8;
7961                         ins->dreg = alloc_dreg (cfg, STACK_I8);
7962                         ++ip;
7963                         ins->inst_l = (gint64)read64 (ip);
7964                         MONO_ADD_INS (cfg->cbb, ins);
7965                         ip += 8;
7966                         *sp++ = ins;
7967                         break;
7968                 case CEE_LDC_R4: {
7969                         float *f;
7970                         gboolean use_aotconst = FALSE;
7971
7972 #ifdef TARGET_POWERPC
7973                         /* FIXME: Clean this up */
7974                         if (cfg->compile_aot)
7975                                 use_aotconst = TRUE;
7976 #endif
7977
7978                         /* FIXME: we should really allocate this only late in the compilation process */
7979                         f = (float *)mono_domain_alloc (cfg->domain, sizeof (float));
7980                         CHECK_OPSIZE (5);
7981                         CHECK_STACK_OVF (1);
7982
7983                         if (use_aotconst) {
7984                                 MonoInst *cons;
7985                                 int dreg;
7986
7987                                 EMIT_NEW_AOTCONST (cfg, cons, MONO_PATCH_INFO_R4, f);
7988
7989                                 dreg = alloc_freg (cfg);
7990                                 EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOADR4_MEMBASE, dreg, cons->dreg, 0);
7991                                 ins->type = cfg->r4_stack_type;
7992                         } else {
7993                                 MONO_INST_NEW (cfg, ins, OP_R4CONST);
7994                                 ins->type = cfg->r4_stack_type;
7995                                 ins->dreg = alloc_dreg (cfg, STACK_R8);
7996                                 ins->inst_p0 = f;
7997                                 MONO_ADD_INS (cfg->cbb, ins);
7998                         }
7999                         ++ip;
8000                         readr4 (ip, f);
8001                         ip += 4;
8002                         *sp++ = ins;
8003                         break;
8004                 }
8005                 case CEE_LDC_R8: {
8006                         double *d;
8007                         gboolean use_aotconst = FALSE;
8008
8009 #ifdef TARGET_POWERPC
8010                         /* FIXME: Clean this up */
8011                         if (cfg->compile_aot)
8012                                 use_aotconst = TRUE;
8013 #endif
8014
8015                         /* FIXME: we should really allocate this only late in the compilation process */
8016                         d = (double *)mono_domain_alloc (cfg->domain, sizeof (double));
8017                         CHECK_OPSIZE (9);
8018                         CHECK_STACK_OVF (1);
8019
8020                         if (use_aotconst) {
8021                                 MonoInst *cons;
8022                                 int dreg;
8023
8024                                 EMIT_NEW_AOTCONST (cfg, cons, MONO_PATCH_INFO_R8, d);
8025
8026                                 dreg = alloc_freg (cfg);
8027                                 EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOADR8_MEMBASE, dreg, cons->dreg, 0);
8028                                 ins->type = STACK_R8;
8029                         } else {
8030                                 MONO_INST_NEW (cfg, ins, OP_R8CONST);
8031                                 ins->type = STACK_R8;
8032                                 ins->dreg = alloc_dreg (cfg, STACK_R8);
8033                                 ins->inst_p0 = d;
8034                                 MONO_ADD_INS (cfg->cbb, ins);
8035                         }
8036                         ++ip;
8037                         readr8 (ip, d);
8038                         ip += 8;
8039                         *sp++ = ins;
8040                         break;
8041                 }
8042                 case CEE_DUP: {
8043                         MonoInst *temp, *store;
8044                         CHECK_STACK (1);
8045                         CHECK_STACK_OVF (1);
8046                         sp--;
8047                         ins = *sp;
8048
8049                         temp = mono_compile_create_var (cfg, type_from_stack_type (ins), OP_LOCAL);
8050                         EMIT_NEW_TEMPSTORE (cfg, store, temp->inst_c0, ins);
8051
8052                         EMIT_NEW_TEMPLOAD (cfg, ins, temp->inst_c0);
8053                         *sp++ = ins;
8054
8055                         EMIT_NEW_TEMPLOAD (cfg, ins, temp->inst_c0);
8056                         *sp++ = ins;
8057
8058                         ++ip;
8059                         inline_costs += 2;
8060                         break;
8061                 }
8062                 case CEE_POP:
8063                         CHECK_STACK (1);
8064                         ip++;
8065                         --sp;
8066
8067 #ifdef TARGET_X86
8068                         if (sp [0]->type == STACK_R8)
8069                                 /* we need to pop the value from the x86 FP stack */
8070                                 MONO_EMIT_NEW_UNALU (cfg, OP_X86_FPOP, -1, sp [0]->dreg);
8071 #endif
8072                         break;
8073                 case CEE_JMP: {
8074                         MonoCallInst *call;
8075                         MonoMethodSignature *fsig;
8076                         int i, n;
8077
8078                         INLINE_FAILURE ("jmp");
8079                         GSHAREDVT_FAILURE (*ip);
8080
8081                         CHECK_OPSIZE (5);
8082                         if (stack_start != sp)
8083                                 UNVERIFIED;
8084                         token = read32 (ip + 1);
8085                         /* FIXME: check the signature matches */
8086                         cmethod = mini_get_method (cfg, method, token, NULL, generic_context);
8087                         CHECK_CFG_ERROR;
8088
8089                         if (cfg->gshared && mono_method_check_context_used (cmethod))
8090                                 GENERIC_SHARING_FAILURE (CEE_JMP);
8091
8092                         mini_profiler_emit_tail_call (cfg, cmethod);
8093
8094                         fsig = mono_method_signature (cmethod);
8095                         n = fsig->param_count + fsig->hasthis;
8096                         if (cfg->llvm_only) {
8097                                 MonoInst **args;
8098
8099                                 args = (MonoInst **)mono_mempool_alloc (cfg->mempool, sizeof (MonoInst*) * n);
8100                                 for (i = 0; i < n; ++i)
8101                                         EMIT_NEW_ARGLOAD (cfg, args [i], i);
8102                                 ins = mono_emit_method_call_full (cfg, cmethod, fsig, TRUE, args, NULL, NULL, NULL);
8103                                 /*
8104                                  * The code in mono-basic-block.c treats the rest of the code as dead, but we
8105                                  * have to emit a normal return since llvm expects it.
8106                                  */
8107                                 if (cfg->ret)
8108                                         emit_setret (cfg, ins);
8109                                 MONO_INST_NEW (cfg, ins, OP_BR);
8110                                 ins->inst_target_bb = end_bblock;
8111                                 MONO_ADD_INS (cfg->cbb, ins);
8112                                 link_bblock (cfg, cfg->cbb, end_bblock);
8113                                 ip += 5;
8114                                 break;
8115                         } else if (cfg->backend->have_op_tail_call) {
8116                                 /* Handle tail calls similarly to calls */
8117                                 DISABLE_AOT (cfg);
8118
8119                                 MONO_INST_NEW_CALL (cfg, call, OP_TAILCALL);
8120                                 call->method = cmethod;
8121                                 call->tail_call = TRUE;
8122                                 call->signature = mono_method_signature (cmethod);
8123                                 call->args = (MonoInst **)mono_mempool_alloc (cfg->mempool, sizeof (MonoInst*) * n);
8124                                 call->inst.inst_p0 = cmethod;
8125                                 for (i = 0; i < n; ++i)
8126                                         EMIT_NEW_ARGLOAD (cfg, call->args [i], i);
8127
8128                                 if (mini_type_is_vtype (mini_get_underlying_type (call->signature->ret)))
8129                                         call->vret_var = cfg->vret_addr;
8130
8131                                 mono_arch_emit_call (cfg, call);
8132                                 cfg->param_area = MAX(cfg->param_area, call->stack_usage);
8133                                 MONO_ADD_INS (cfg->cbb, (MonoInst*)call);
8134                         } else {
8135                                 for (i = 0; i < num_args; ++i)
8136                                         /* Prevent arguments from being optimized away */
8137                                         arg_array [i]->flags |= MONO_INST_VOLATILE;
8138
8139                                 MONO_INST_NEW_CALL (cfg, call, OP_JMP);
8140                                 ins = (MonoInst*)call;
8141                                 ins->inst_p0 = cmethod;
8142                                 MONO_ADD_INS (cfg->cbb, ins);
8143                         }
8144
8145                         ip += 5;
8146                         start_new_bblock = 1;
8147                         break;
8148                 }
8149                 case CEE_CALLI: {
8150                         MonoInst *addr;
8151                         MonoMethodSignature *fsig;
8152
8153                         CHECK_OPSIZE (5);
8154                         token = read32 (ip + 1);
8155
8156                         ins = NULL;
8157
8158                         //GSHAREDVT_FAILURE (*ip);
8159                         cmethod = NULL;
8160                         CHECK_STACK (1);
8161                         --sp;
8162                         addr = *sp;
8163                         fsig = mini_get_signature (method, token, generic_context, &cfg->error);
8164                         CHECK_CFG_ERROR;
8165
8166                         if (method->dynamic && fsig->pinvoke) {
8167                                 MonoInst *args [3];
8168
8169                                 /*
8170                                  * This is a call through a function pointer using a pinvoke
8171                                  * signature. Have to create a wrapper and call that instead.
8172                                  * FIXME: This is very slow, need to create a wrapper at JIT time
8173                                  * instead based on the signature.
8174                                  */
8175                                 EMIT_NEW_IMAGECONST (cfg, args [0], method->klass->image);
8176                                 EMIT_NEW_PCONST (cfg, args [1], fsig);
8177                                 args [2] = addr;
8178                                 addr = mono_emit_jit_icall (cfg, mono_get_native_calli_wrapper, args);
8179                         }
8180
8181                         n = fsig->param_count + fsig->hasthis;
8182
8183                         CHECK_STACK (n);
8184
8185                         //g_assert (!virtual_ || fsig->hasthis);
8186
8187                         sp -= n;
8188
8189                         inline_costs += 10 * num_calls++;
8190
8191                         /*
8192                          * Making generic calls out of gsharedvt methods.
8193                          * This needs to be used for all generic calls, not just ones with a gsharedvt signature, to avoid
8194                          * patching gshared method addresses into a gsharedvt method.
8195                          */
8196                         if (cfg->gsharedvt && mini_is_gsharedvt_signature (fsig)) {
8197                                 /*
8198                                  * We pass the address to the gsharedvt trampoline in the rgctx reg
8199                                  */
8200                                 MonoInst *callee = addr;
8201
8202                                 if (method->wrapper_type != MONO_WRAPPER_DELEGATE_INVOKE)
8203                                         /* Not tested */
8204                                         GSHAREDVT_FAILURE (*ip);
8205
8206                                 if (cfg->llvm_only)
8207                                         // FIXME:
8208                                         GSHAREDVT_FAILURE (*ip);
8209
8210                                 addr = emit_get_rgctx_sig (cfg, context_used,
8211                                                                                           fsig, MONO_RGCTX_INFO_SIG_GSHAREDVT_OUT_TRAMPOLINE_CALLI);
8212                                 ins = (MonoInst*)mini_emit_calli (cfg, fsig, sp, addr, NULL, callee);
8213                                 goto calli_end;
8214                         }
8215
8216                         /* Prevent inlining of methods with indirect calls */
8217                         INLINE_FAILURE ("indirect call");
8218
8219                         if (addr->opcode == OP_PCONST || addr->opcode == OP_AOTCONST || addr->opcode == OP_GOT_ENTRY) {
8220                                 MonoJumpInfoType info_type;
8221                                 gpointer info_data;
8222
8223                                 /*
8224                                  * Instead of emitting an indirect call, emit a direct call
8225                                  * with the contents of the aotconst as the patch info.
8226                                  */
8227                                 if (addr->opcode == OP_PCONST || addr->opcode == OP_AOTCONST) {
8228                                         info_type = (MonoJumpInfoType)addr->inst_c1;
8229                                         info_data = addr->inst_p0;
8230                                 } else {
8231                                         info_type = (MonoJumpInfoType)addr->inst_right->inst_c1;
8232                                         info_data = addr->inst_right->inst_left;
8233                                 }
8234
8235                                 if (info_type == MONO_PATCH_INFO_ICALL_ADDR) {
8236                                         ins = (MonoInst*)mono_emit_abs_call (cfg, MONO_PATCH_INFO_ICALL_ADDR_CALL, info_data, fsig, sp);
8237                                         NULLIFY_INS (addr);
8238                                         goto calli_end;
8239                                 } else if (info_type == MONO_PATCH_INFO_JIT_ICALL_ADDR) {
8240                                         ins = (MonoInst*)mono_emit_abs_call (cfg, info_type, info_data, fsig, sp);
8241                                         NULLIFY_INS (addr);
8242                                         goto calli_end;
8243                                 }
8244                         }
8245                         ins = (MonoInst*)mini_emit_calli (cfg, fsig, sp, addr, NULL, NULL);
8246
8247                         calli_end:
8248
8249                         /* End of call, INS should contain the result of the call, if any */
8250
8251                         if (!MONO_TYPE_IS_VOID (fsig->ret)) {
8252                                 g_assert (ins);
8253                                 *sp++ = mono_emit_widen_call_res (cfg, ins, fsig);
8254                         }
8255
8256                         CHECK_CFG_EXCEPTION;
8257
8258                         ip += 5;
8259                         ins_flag = 0;
8260                         constrained_class = NULL;
8261                         break;
8262                 }
8263                 case CEE_CALL:
8264                 case CEE_CALLVIRT: {
8265                         MonoInst *addr = NULL;
8266                         MonoMethodSignature *fsig = NULL;
8267                         int array_rank = 0;
8268                         int virtual_ = *ip == CEE_CALLVIRT;
8269                         gboolean pass_imt_from_rgctx = FALSE;
8270                         MonoInst *imt_arg = NULL;
8271                         MonoInst *keep_this_alive = NULL;
8272                         gboolean pass_vtable = FALSE;
8273                         gboolean pass_mrgctx = FALSE;
8274                         MonoInst *vtable_arg = NULL;
8275                         gboolean check_this = FALSE;
8276                         gboolean supported_tail_call = FALSE;
8277                         gboolean tail_call = FALSE;
8278                         gboolean need_seq_point = FALSE;
8279                         guint32 call_opcode = *ip;
8280                         gboolean emit_widen = TRUE;
8281                         gboolean push_res = TRUE;
8282                         gboolean skip_ret = FALSE;
8283                         gboolean delegate_invoke = FALSE;
8284                         gboolean direct_icall = FALSE;
8285                         gboolean constrained_partial_call = FALSE;
8286                         MonoMethod *cil_method;
8287
8288                         CHECK_OPSIZE (5);
8289                         token = read32 (ip + 1);
8290
8291                         ins = NULL;
8292
8293                         cmethod = mini_get_method (cfg, method, token, NULL, generic_context);
8294                         CHECK_CFG_ERROR;
8295
8296                         cil_method = cmethod;
8297
8298                         if (constrained_class) {
8299                                 if ((constrained_class->byval_arg.type == MONO_TYPE_VAR || constrained_class->byval_arg.type == MONO_TYPE_MVAR) && cfg->gshared) {
8300                                         if (!mini_is_gsharedvt_klass (constrained_class)) {
8301                                                 g_assert (!cmethod->klass->valuetype);
8302                                                 if (!mini_type_is_reference (&constrained_class->byval_arg))
8303                                                         constrained_partial_call = TRUE;
8304                                         }
8305                                 }
8306
8307                                 if (method->wrapper_type != MONO_WRAPPER_NONE) {
8308                                         if (cfg->verbose_level > 2)
8309                                                 printf ("DM Constrained call to %s\n", mono_type_get_full_name (constrained_class));
8310                                         if (!((constrained_class->byval_arg.type == MONO_TYPE_VAR ||
8311                                                    constrained_class->byval_arg.type == MONO_TYPE_MVAR) &&
8312                                                   cfg->gshared)) {
8313                                                 cmethod = mono_get_method_constrained_with_method (image, cil_method, constrained_class, generic_context, &cfg->error);
8314                                                 CHECK_CFG_ERROR;
8315                                         }
8316                                 } else {
8317                                         if (cfg->verbose_level > 2)
8318                                                 printf ("Constrained call to %s\n", mono_type_get_full_name (constrained_class));
8319
8320                                         if ((constrained_class->byval_arg.type == MONO_TYPE_VAR || constrained_class->byval_arg.type == MONO_TYPE_MVAR) && cfg->gshared) {
8321                                                 /*
8322                                                  * This is needed since get_method_constrained can't find
8323                                                  * the method in klass representing a type var.
8324                                                  * The type var is guaranteed to be a reference type in this
8325                                                  * case.
8326                                                  */
8327                                                 if (!mini_is_gsharedvt_klass (constrained_class))
8328                                                         g_assert (!cmethod->klass->valuetype);
8329                                         } else {
8330                                                 cmethod = mono_get_method_constrained_checked (image, token, constrained_class, generic_context, &cil_method, &cfg->error);
8331                                                 CHECK_CFG_ERROR;
8332                                         }
8333                                 }
8334
8335                                 if (constrained_class->enumtype && !strcmp (cmethod->name, "GetHashCode")) {
8336                                         /* Use the corresponding method from the base type to avoid boxing */
8337                                         MonoType *base_type = mono_class_enum_basetype (constrained_class);
8338                                         g_assert (base_type);
8339                                         constrained_class = mono_class_from_mono_type (base_type);
8340                                         cmethod = mono_class_get_method_from_name (constrained_class, cmethod->name, 0);
8341                                         g_assert (cmethod);
8342                                 }
8343                         }
8344
8345                         if (!dont_verify && !cfg->skip_visibility) {
8346                                 MonoMethod *target_method = cil_method;
8347                                 if (method->is_inflated) {
8348                                         target_method = mini_get_method_allow_open (method, token, NULL, &(mono_method_get_generic_container (method_definition)->context), &cfg->error);
8349                                         CHECK_CFG_ERROR;
8350                                 }
8351                                 if (!mono_method_can_access_method (method_definition, target_method) &&
8352                                         !mono_method_can_access_method (method, cil_method))
8353                                         emit_method_access_failure (cfg, method, cil_method);
8354                         }
8355
8356                         if (mono_security_core_clr_enabled ())
8357                                 ensure_method_is_allowed_to_call_method (cfg, method, cil_method);
8358
8359                         if (!virtual_ && (cmethod->flags & METHOD_ATTRIBUTE_ABSTRACT))
8360                                 /* MS.NET seems to silently convert this to a callvirt */
8361                                 virtual_ = 1;
8362
8363                         {
8364                                 /*
8365                                  * MS.NET accepts non virtual calls to virtual final methods of transparent proxy classes and
8366                                  * converts to a callvirt.
8367                                  *
8368                                  * tests/bug-515884.il is an example of this behavior
8369                                  */
8370                                 const int test_flags = METHOD_ATTRIBUTE_VIRTUAL | METHOD_ATTRIBUTE_FINAL | METHOD_ATTRIBUTE_STATIC;
8371                                 const int expected_flags = METHOD_ATTRIBUTE_VIRTUAL | METHOD_ATTRIBUTE_FINAL;
8372                                 if (!virtual_ && mono_class_is_marshalbyref (cmethod->klass) && (cmethod->flags & test_flags) == expected_flags && cfg->method->wrapper_type == MONO_WRAPPER_NONE)
8373                                         virtual_ = 1;
8374                         }
8375
8376                         if (!cmethod->klass->inited)
8377                                 if (!mono_class_init (cmethod->klass))
8378                                         TYPE_LOAD_ERROR (cmethod->klass);
8379
8380                         fsig = mono_method_signature (cmethod);
8381                         if (!fsig)
8382                                 LOAD_ERROR;
8383                         if (cmethod->iflags & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL &&
8384                                 mini_class_is_system_array (cmethod->klass)) {
8385                                 array_rank = cmethod->klass->rank;
8386                         } else if ((cmethod->iflags & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL) && icall_is_direct_callable (cfg, cmethod)) {
8387                                 direct_icall = TRUE;
8388                         } else if (fsig->pinvoke) {
8389                                 MonoMethod *wrapper = mono_marshal_get_native_wrapper (cmethod, TRUE, cfg->compile_aot);
8390                                 fsig = mono_method_signature (wrapper);
8391                         } else if (constrained_class) {
8392                         } else {
8393                                 fsig = mono_method_get_signature_checked (cmethod, image, token, generic_context, &cfg->error);
8394                                 CHECK_CFG_ERROR;
8395                         }
8396
8397                         if (cfg->llvm_only && !cfg->method->wrapper_type && (!cmethod || cmethod->is_inflated))
8398                                 cfg->signatures = g_slist_prepend_mempool (cfg->mempool, cfg->signatures, fsig);
8399
8400                         /* See code below */
8401                         if (cmethod->klass == mono_defaults.monitor_class && !strcmp (cmethod->name, "Enter") && mono_method_signature (cmethod)->param_count == 1) {
8402                                 MonoBasicBlock *tbb;
8403
8404                                 GET_BBLOCK (cfg, tbb, ip + 5);
8405                                 if (tbb->try_start && MONO_REGION_FLAGS(tbb->region) == MONO_EXCEPTION_CLAUSE_FINALLY) {
8406                                         /*
8407                                          * We want to extend the try block to cover the call, but we can't do it if the
8408                                          * call is made directly since its followed by an exception check.
8409                                          */
8410                                         direct_icall = FALSE;
8411                                 }
8412                         }
8413
8414                         mono_save_token_info (cfg, image, token, cil_method);
8415
8416                         if (!(seq_point_locs && mono_bitset_test_fast (seq_point_locs, ip + 5 - header->code)))
8417                                 need_seq_point = TRUE;
8418
8419                         /* Don't support calls made using type arguments for now */
8420                         /*
8421                           if (cfg->gsharedvt) {
8422                           if (mini_is_gsharedvt_signature (fsig))
8423                           GSHAREDVT_FAILURE (*ip);
8424                           }
8425                         */
8426
8427                         if (cmethod->string_ctor && method->wrapper_type != MONO_WRAPPER_RUNTIME_INVOKE)
8428                                 g_assert_not_reached ();
8429
8430                         n = fsig->param_count + fsig->hasthis;
8431
8432                         if (!cfg->gshared && mono_class_is_gtd (cmethod->klass))
8433                                 UNVERIFIED;
8434
8435                         if (!cfg->gshared)
8436                                 g_assert (!mono_method_check_context_used (cmethod));
8437
8438                         CHECK_STACK (n);
8439
8440                         //g_assert (!virtual_ || fsig->hasthis);
8441
8442                         sp -= n;
8443
8444                         if (cmethod && cmethod->klass->image == mono_defaults.corlib && !strcmp (cmethod->klass->name, "ThrowHelper"))
8445                                 cfg->cbb->out_of_line = TRUE;
8446
8447                         /*
8448                          * We have the `constrained.' prefix opcode.
8449                          */
8450                         if (constrained_class) {
8451                                 if (mini_is_gsharedvt_klass (constrained_class)) {
8452                                         if ((cmethod->klass != mono_defaults.object_class) && constrained_class->valuetype && cmethod->klass->valuetype) {
8453                                                 /* The 'Own method' case below */
8454                                         } else if (cmethod->klass->image != mono_defaults.corlib && !mono_class_is_interface (cmethod->klass) && !cmethod->klass->valuetype) {
8455                                                 /* 'The type parameter is instantiated as a reference type' case below. */
8456                                         } else {
8457                                                 ins = handle_constrained_gsharedvt_call (cfg, cmethod, fsig, sp, constrained_class, &emit_widen);
8458                                                 CHECK_CFG_EXCEPTION;
8459                                                 g_assert (ins);
8460                                                 goto call_end;
8461                                         }
8462                                 }
8463
8464                                 if (constrained_partial_call) {
8465                                         gboolean need_box = TRUE;
8466
8467                                         /*
8468                                          * The receiver is a valuetype, but the exact type is not known at compile time. This means the
8469                                          * called method is not known at compile time either. The called method could end up being
8470                                          * one of the methods on the parent classes (object/valuetype/enum), in which case we need
8471                                          * to box the receiver.
8472                                          * A simple solution would be to box always and make a normal virtual call, but that would
8473                                          * be bad performance wise.
8474                                          */
8475                                         if (mono_class_is_interface (cmethod->klass) && mono_class_is_ginst (cmethod->klass)) {
8476                                                 /*
8477                                                  * The parent classes implement no generic interfaces, so the called method will be a vtype method, so no boxing neccessary.
8478                                                  */
8479                                                 need_box = FALSE;
8480                                         }
8481
8482                                         if (!(cmethod->flags & METHOD_ATTRIBUTE_VIRTUAL) && (cmethod->klass == mono_defaults.object_class || cmethod->klass == mono_defaults.enum_class->parent || cmethod->klass == mono_defaults.enum_class)) {
8483                                                 /* The called method is not virtual, i.e. Object:GetType (), the receiver is a vtype, has to box */
8484                                                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &constrained_class->byval_arg, sp [0]->dreg, 0);
8485                                                 ins->klass = constrained_class;
8486                                                 sp [0] = handle_box (cfg, ins, constrained_class, mono_class_check_context_used (constrained_class));
8487                                                 CHECK_CFG_EXCEPTION;
8488                                         } else if (need_box) {
8489                                                 MonoInst *box_type;
8490                                                 MonoBasicBlock *is_ref_bb, *end_bb;
8491                                                 MonoInst *nonbox_call;
8492
8493                                                 /*
8494                                                  * Determine at runtime whenever the called method is defined on object/valuetype/enum, and emit a boxing call
8495                                                  * if needed.
8496                                                  * FIXME: It is possible to inline the called method in a lot of cases, i.e. for T_INT,
8497                                                  * the no-box case goes to a method in Int32, while the box case goes to a method in Enum.
8498                                                  */
8499                                                 addr = emit_get_rgctx_virt_method (cfg, mono_class_check_context_used (constrained_class), constrained_class, cmethod, MONO_RGCTX_INFO_VIRT_METHOD_CODE);
8500
8501                                                 NEW_BBLOCK (cfg, is_ref_bb);
8502                                                 NEW_BBLOCK (cfg, end_bb);
8503
8504                                                 box_type = emit_get_rgctx_virt_method (cfg, mono_class_check_context_used (constrained_class), constrained_class, cmethod, MONO_RGCTX_INFO_VIRT_METHOD_BOX_TYPE);
8505                                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, box_type->dreg, MONO_GSHAREDVT_BOX_TYPE_REF);
8506                                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_IBEQ, is_ref_bb);
8507
8508                                                 /* Non-ref case */
8509                                                 nonbox_call = (MonoInst*)mini_emit_calli (cfg, fsig, sp, addr, NULL, NULL);
8510
8511                                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
8512
8513                                                 /* Ref case */
8514                                                 MONO_START_BB (cfg, is_ref_bb);
8515                                                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &constrained_class->byval_arg, sp [0]->dreg, 0);
8516                                                 ins->klass = constrained_class;
8517                                                 sp [0] = handle_box (cfg, ins, constrained_class, mono_class_check_context_used (constrained_class));
8518                                                 ins = (MonoInst*)mini_emit_calli (cfg, fsig, sp, addr, NULL, NULL);
8519
8520                                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
8521
8522                                                 MONO_START_BB (cfg, end_bb);
8523                                                 cfg->cbb = end_bb;
8524
8525                                                 nonbox_call->dreg = ins->dreg;
8526                                                 goto call_end;
8527                                         } else {
8528                                                 g_assert (mono_class_is_interface (cmethod->klass));
8529                                                 addr = emit_get_rgctx_virt_method (cfg, mono_class_check_context_used (constrained_class), constrained_class, cmethod, MONO_RGCTX_INFO_VIRT_METHOD_CODE);
8530                                                 ins = (MonoInst*)mini_emit_calli (cfg, fsig, sp, addr, NULL, NULL);
8531                                                 goto call_end;
8532                                         }
8533                                 } else if (constrained_class->valuetype && (cmethod->klass == mono_defaults.object_class || cmethod->klass == mono_defaults.enum_class->parent || cmethod->klass == mono_defaults.enum_class)) {
8534                                         /*
8535                                          * The type parameter is instantiated as a valuetype,
8536                                          * but that type doesn't override the method we're
8537                                          * calling, so we need to box `this'.
8538                                          */
8539                                         EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &constrained_class->byval_arg, sp [0]->dreg, 0);
8540                                         ins->klass = constrained_class;
8541                                         sp [0] = handle_box (cfg, ins, constrained_class, mono_class_check_context_used (constrained_class));
8542                                         CHECK_CFG_EXCEPTION;
8543                                 } else if (!constrained_class->valuetype) {
8544                                         int dreg = alloc_ireg_ref (cfg);
8545
8546                                         /*
8547                                          * The type parameter is instantiated as a reference
8548                                          * type.  We have a managed pointer on the stack, so
8549                                          * we need to dereference it here.
8550                                          */
8551                                         EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOAD_MEMBASE, dreg, sp [0]->dreg, 0);
8552                                         ins->type = STACK_OBJ;
8553                                         sp [0] = ins;
8554                                 } else {
8555                                         if (cmethod->klass->valuetype) {
8556                                                 /* Own method */
8557                                         } else {
8558                                                 /* Interface method */
8559                                                 int ioffset, slot;
8560
8561                                                 mono_class_setup_vtable (constrained_class);
8562                                                 CHECK_TYPELOAD (constrained_class);
8563                                                 ioffset = mono_class_interface_offset (constrained_class, cmethod->klass);
8564                                                 if (ioffset == -1)
8565                                                         TYPE_LOAD_ERROR (constrained_class);
8566                                                 slot = mono_method_get_vtable_slot (cmethod);
8567                                                 if (slot == -1)
8568                                                         TYPE_LOAD_ERROR (cmethod->klass);
8569                                                 cmethod = constrained_class->vtable [ioffset + slot];
8570
8571                                                 if (cmethod->klass == mono_defaults.enum_class) {
8572                                                         /* Enum implements some interfaces, so treat this as the first case */
8573                                                         EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &constrained_class->byval_arg, sp [0]->dreg, 0);
8574                                                         ins->klass = constrained_class;
8575                                                         sp [0] = handle_box (cfg, ins, constrained_class, mono_class_check_context_used (constrained_class));
8576                                                         CHECK_CFG_EXCEPTION;
8577                                                 }
8578                                         }
8579                                         virtual_ = 0;
8580                                 }
8581                                 constrained_class = NULL;
8582                         }
8583
8584                         if (check_call_signature (cfg, fsig, sp))
8585                                 UNVERIFIED;
8586
8587                         if ((cmethod->klass->parent == mono_defaults.multicastdelegate_class) && !strcmp (cmethod->name, "Invoke"))
8588                                 delegate_invoke = TRUE;
8589
8590                         if ((cfg->opt & MONO_OPT_INTRINS) && (ins = mini_emit_inst_for_sharable_method (cfg, cmethod, fsig, sp))) {
8591                                 if (!MONO_TYPE_IS_VOID (fsig->ret)) {
8592                                         type_to_eval_stack_type ((cfg), fsig->ret, ins);
8593                                         emit_widen = FALSE;
8594                                 }
8595
8596                                 goto call_end;
8597                         }
8598
8599                         /*
8600                          * If the callee is a shared method, then its static cctor
8601                          * might not get called after the call was patched.
8602                          */
8603                         if (cfg->gshared && cmethod->klass != method->klass && mono_class_is_ginst (cmethod->klass) && mono_method_is_generic_sharable (cmethod, TRUE) && mono_class_needs_cctor_run (cmethod->klass, method)) {
8604                                 emit_class_init (cfg, cmethod->klass);
8605                                 CHECK_TYPELOAD (cmethod->klass);
8606                         }
8607
8608                         check_method_sharing (cfg, cmethod, &pass_vtable, &pass_mrgctx);
8609
8610                         if (cfg->gshared) {
8611                                 MonoGenericContext *cmethod_context = mono_method_get_context (cmethod);
8612
8613                                 context_used = mini_method_check_context_used (cfg, cmethod);
8614
8615                                 if (context_used && mono_class_is_interface (cmethod->klass)) {
8616                                         /* Generic method interface
8617                                            calls are resolved via a
8618                                            helper function and don't
8619                                            need an imt. */
8620                                         if (!cmethod_context || !cmethod_context->method_inst)
8621                                                 pass_imt_from_rgctx = TRUE;
8622                                 }
8623
8624                                 /*
8625                                  * If a shared method calls another
8626                                  * shared method then the caller must
8627                                  * have a generic sharing context
8628                                  * because the magic trampoline
8629                                  * requires it.  FIXME: We shouldn't
8630                                  * have to force the vtable/mrgctx
8631                                  * variable here.  Instead there
8632                                  * should be a flag in the cfg to
8633                                  * request a generic sharing context.
8634                                  */
8635                                 if (context_used &&
8636                                                 ((cfg->method->flags & METHOD_ATTRIBUTE_STATIC) || cfg->method->klass->valuetype))
8637                                         mono_get_vtable_var (cfg);
8638                         }
8639
8640                         if (pass_vtable) {
8641                                 if (context_used) {
8642                                         vtable_arg = mini_emit_get_rgctx_klass (cfg, context_used, cmethod->klass, MONO_RGCTX_INFO_VTABLE);
8643                                 } else {
8644                                         MonoVTable *vtable = mono_class_vtable (cfg->domain, cmethod->klass);
8645
8646                                         CHECK_TYPELOAD (cmethod->klass);
8647                                         EMIT_NEW_VTABLECONST (cfg, vtable_arg, vtable);
8648                                 }
8649                         }
8650
8651                         if (pass_mrgctx) {
8652                                 g_assert (!vtable_arg);
8653
8654                                 if (!cfg->compile_aot) {
8655                                         /*
8656                                          * emit_get_rgctx_method () calls mono_class_vtable () so check
8657                                          * for type load errors before.
8658                                          */
8659                                         mono_class_setup_vtable (cmethod->klass);
8660                                         CHECK_TYPELOAD (cmethod->klass);
8661                                 }
8662
8663                                 vtable_arg = emit_get_rgctx_method (cfg, context_used, cmethod, MONO_RGCTX_INFO_METHOD_RGCTX);
8664
8665                                 /* !marshalbyref is needed to properly handle generic methods + remoting */
8666                                 if ((!(cmethod->flags & METHOD_ATTRIBUTE_VIRTUAL) ||
8667                                          MONO_METHOD_IS_FINAL (cmethod)) &&
8668                                         !mono_class_is_marshalbyref (cmethod->klass)) {
8669                                         if (virtual_)
8670                                                 check_this = TRUE;
8671                                         virtual_ = 0;
8672                                 }
8673                         }
8674
8675                         if (pass_imt_from_rgctx) {
8676                                 g_assert (!pass_vtable);
8677
8678                                 imt_arg = emit_get_rgctx_method (cfg, context_used,
8679                                         cmethod, MONO_RGCTX_INFO_METHOD);
8680                         }
8681
8682                         if (check_this)
8683                                 MONO_EMIT_NEW_CHECK_THIS (cfg, sp [0]->dreg);
8684
8685                         /* Calling virtual generic methods */
8686                         if (virtual_ && (cmethod->flags & METHOD_ATTRIBUTE_VIRTUAL) &&
8687                             !(MONO_METHOD_IS_FINAL (cmethod) &&
8688                               cmethod->wrapper_type != MONO_WRAPPER_REMOTING_INVOKE_WITH_CHECK) &&
8689                             fsig->generic_param_count &&
8690                                 !(cfg->gsharedvt && mini_is_gsharedvt_signature (fsig)) &&
8691                                 !cfg->llvm_only) {
8692                                 MonoInst *this_temp, *this_arg_temp, *store;
8693                                 MonoInst *iargs [4];
8694
8695                                 g_assert (fsig->is_inflated);
8696
8697                                 /* Prevent inlining of methods that contain indirect calls */
8698                                 INLINE_FAILURE ("virtual generic call");
8699
8700                                 if (cfg->gsharedvt && mini_is_gsharedvt_signature (fsig))
8701                                         GSHAREDVT_FAILURE (*ip);
8702
8703                                 if (cfg->backend->have_generalized_imt_trampoline && cfg->backend->gshared_supported && cmethod->wrapper_type == MONO_WRAPPER_NONE) {
8704                                         g_assert (!imt_arg);
8705                                         if (!context_used)
8706                                                 g_assert (cmethod->is_inflated);
8707                                         imt_arg = emit_get_rgctx_method (cfg, context_used,
8708                                                                                                          cmethod, MONO_RGCTX_INFO_METHOD);
8709                                         ins = mono_emit_method_call_full (cfg, cmethod, fsig, FALSE, sp, sp [0], imt_arg, NULL);
8710                                 } else {
8711                                         this_temp = mono_compile_create_var (cfg, type_from_stack_type (sp [0]), OP_LOCAL);
8712                                         NEW_TEMPSTORE (cfg, store, this_temp->inst_c0, sp [0]);
8713                                         MONO_ADD_INS (cfg->cbb, store);
8714
8715                                         /* FIXME: This should be a managed pointer */
8716                                         this_arg_temp = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
8717
8718                                         EMIT_NEW_TEMPLOAD (cfg, iargs [0], this_temp->inst_c0);
8719                                         iargs [1] = emit_get_rgctx_method (cfg, context_used,
8720                                                                                                            cmethod, MONO_RGCTX_INFO_METHOD);
8721                                         EMIT_NEW_TEMPLOADA (cfg, iargs [2], this_arg_temp->inst_c0);
8722                                         addr = mono_emit_jit_icall (cfg,
8723                                                                                                 mono_helper_compile_generic_method, iargs);
8724
8725                                         EMIT_NEW_TEMPLOAD (cfg, sp [0], this_arg_temp->inst_c0);
8726
8727                                         ins = (MonoInst*)mini_emit_calli (cfg, fsig, sp, addr, NULL, NULL);
8728                                 }
8729
8730                                 goto call_end;
8731                         }
8732
8733                         /*
8734                          * Implement a workaround for the inherent races involved in locking:
8735                          * Monitor.Enter ()
8736                          * try {
8737                          * } finally {
8738                          *    Monitor.Exit ()
8739                          * }
8740                          * If a thread abort happens between the call to Monitor.Enter () and the start of the
8741                          * try block, the Exit () won't be executed, see:
8742                          * http://www.bluebytesoftware.com/blog/2007/01/30/MonitorEnterThreadAbortsAndOrphanedLocks.aspx
8743                          * To work around this, we extend such try blocks to include the last x bytes
8744                          * of the Monitor.Enter () call.
8745                          */
8746                         if (cmethod->klass == mono_defaults.monitor_class && !strcmp (cmethod->name, "Enter") && mono_method_signature (cmethod)->param_count == 1) {
8747                                 MonoBasicBlock *tbb;
8748
8749                                 GET_BBLOCK (cfg, tbb, ip + 5);
8750                                 /*
8751                                  * Only extend try blocks with a finally, to avoid catching exceptions thrown
8752                                  * from Monitor.Enter like ArgumentNullException.
8753                                  */
8754                                 if (tbb->try_start && MONO_REGION_FLAGS(tbb->region) == MONO_EXCEPTION_CLAUSE_FINALLY) {
8755                                         /* Mark this bblock as needing to be extended */
8756                                         tbb->extend_try_block = TRUE;
8757                                 }
8758                         }
8759
8760                         /* Conversion to a JIT intrinsic */
8761                         if ((cfg->opt & MONO_OPT_INTRINS) && (ins = mini_emit_inst_for_method (cfg, cmethod, fsig, sp))) {
8762                                 if (!MONO_TYPE_IS_VOID (fsig->ret)) {
8763                                         type_to_eval_stack_type ((cfg), fsig->ret, ins);
8764                                         emit_widen = FALSE;
8765                                 }
8766                                 goto call_end;
8767                         }
8768                         CHECK_CFG_ERROR;
8769
8770                         /* Inlining */
8771                         if ((cfg->opt & MONO_OPT_INLINE) &&
8772                                 (!virtual_ || !(cmethod->flags & METHOD_ATTRIBUTE_VIRTUAL) || MONO_METHOD_IS_FINAL (cmethod)) &&
8773                             mono_method_check_inlining (cfg, cmethod)) {
8774                                 int costs;
8775                                 gboolean always = FALSE;
8776
8777                                 if ((cmethod->iflags & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL) ||
8778                                         (cmethod->flags & METHOD_ATTRIBUTE_PINVOKE_IMPL)) {
8779                                         /* Prevent inlining of methods that call wrappers */
8780                                         INLINE_FAILURE ("wrapper call");
8781                                         cmethod = mono_marshal_get_native_wrapper (cmethod, TRUE, FALSE);
8782                                         always = TRUE;
8783                                 }
8784
8785                                 costs = inline_method (cfg, cmethod, fsig, sp, ip, cfg->real_offset, always);
8786                                 if (costs) {
8787                                         cfg->real_offset += 5;
8788
8789                                         if (!MONO_TYPE_IS_VOID (fsig->ret)) {
8790                                                 /* *sp is already set by inline_method */
8791                                                 sp++;
8792                                                 push_res = FALSE;
8793                                         }
8794
8795                                         inline_costs += costs;
8796
8797                                         goto call_end;
8798                                 }
8799                         }
8800
8801                         /* Tail recursion elimination */
8802                         if ((cfg->opt & MONO_OPT_TAILC) && call_opcode == CEE_CALL && cmethod == method && ip [5] == CEE_RET && !vtable_arg) {
8803                                 gboolean has_vtargs = FALSE;
8804                                 int i;
8805
8806                                 /* Prevent inlining of methods with tail calls (the call stack would be altered) */
8807                                 INLINE_FAILURE ("tail call");
8808
8809                                 /* keep it simple */
8810                                 for (i =  fsig->param_count - 1; i >= 0; i--) {
8811                                         if (MONO_TYPE_ISSTRUCT (mono_method_signature (cmethod)->params [i]))
8812                                                 has_vtargs = TRUE;
8813                                 }
8814
8815                                 if (!has_vtargs) {
8816                                         if (need_seq_point) {
8817                                                 emit_seq_point (cfg, method, ip, FALSE, TRUE);
8818                                                 need_seq_point = FALSE;
8819                                         }
8820                                         for (i = 0; i < n; ++i)
8821                                                 EMIT_NEW_ARGSTORE (cfg, ins, i, sp [i]);
8822                                         MONO_INST_NEW (cfg, ins, OP_BR);
8823                                         MONO_ADD_INS (cfg->cbb, ins);
8824                                         tblock = start_bblock->out_bb [0];
8825                                         link_bblock (cfg, cfg->cbb, tblock);
8826                                         ins->inst_target_bb = tblock;
8827                                         start_new_bblock = 1;
8828
8829                                         /* skip the CEE_RET, too */
8830                                         if (ip_in_bb (cfg, cfg->cbb, ip + 5))
8831                                                 skip_ret = TRUE;
8832                                         push_res = FALSE;
8833                                         goto call_end;
8834                                 }
8835                         }
8836
8837                         inline_costs += 10 * num_calls++;
8838
8839                         /*
8840                          * Synchronized wrappers.
8841                          * Its hard to determine where to replace a method with its synchronized
8842                          * wrapper without causing an infinite recursion. The current solution is
8843                          * to add the synchronized wrapper in the trampolines, and to
8844                          * change the called method to a dummy wrapper, and resolve that wrapper
8845                          * to the real method in mono_jit_compile_method ().
8846                          */
8847                         if (cfg->method->wrapper_type == MONO_WRAPPER_SYNCHRONIZED) {
8848                                 MonoMethod *orig = mono_marshal_method_from_wrapper (cfg->method);
8849                                 if (cmethod == orig || (cmethod->is_inflated && mono_method_get_declaring_generic_method (cmethod) == orig))
8850                                         cmethod = mono_marshal_get_synchronized_inner_wrapper (cmethod);
8851                         }
8852
8853                         /*
8854                          * Making generic calls out of gsharedvt methods.
8855                          * This needs to be used for all generic calls, not just ones with a gsharedvt signature, to avoid
8856                          * patching gshared method addresses into a gsharedvt method.
8857                          */
8858                         if (cfg->gsharedvt && (mini_is_gsharedvt_signature (fsig) || cmethod->is_inflated || mono_class_is_ginst (cmethod->klass)) &&
8859                                 !(cmethod->klass->rank && cmethod->klass->byval_arg.type != MONO_TYPE_SZARRAY) &&
8860                                 (!(cfg->llvm_only && virtual_ && (cmethod->flags & METHOD_ATTRIBUTE_VIRTUAL)))) {
8861                                 MonoRgctxInfoType info_type;
8862
8863                                 if (virtual_) {
8864                                         //if (mono_class_is_interface (cmethod->klass))
8865                                                 //GSHAREDVT_FAILURE (*ip);
8866                                         // disable for possible remoting calls
8867                                         if (fsig->hasthis && (mono_class_is_marshalbyref (method->klass) || method->klass == mono_defaults.object_class))
8868                                                 GSHAREDVT_FAILURE (*ip);
8869                                         if (fsig->generic_param_count) {
8870                                                 /* virtual generic call */
8871                                                 g_assert (!imt_arg);
8872                                                 /* Same as the virtual generic case above */
8873                                                 imt_arg = emit_get_rgctx_method (cfg, context_used,
8874                                                                                                                  cmethod, MONO_RGCTX_INFO_METHOD);
8875                                                 /* This is not needed, as the trampoline code will pass one, and it might be passed in the same reg as the imt arg */
8876                                                 vtable_arg = NULL;
8877                                         } else if (mono_class_is_interface (cmethod->klass) && !imt_arg) {
8878                                                 /* This can happen when we call a fully instantiated iface method */
8879                                                 imt_arg = emit_get_rgctx_method (cfg, context_used,
8880                                                                                                                  cmethod, MONO_RGCTX_INFO_METHOD);
8881                                                 vtable_arg = NULL;
8882                                         }
8883                                 }
8884
8885                                 if ((cmethod->klass->parent == mono_defaults.multicastdelegate_class) && (!strcmp (cmethod->name, "Invoke")))
8886                                         keep_this_alive = sp [0];
8887
8888                                 if (virtual_ && (cmethod->flags & METHOD_ATTRIBUTE_VIRTUAL))
8889                                         info_type = MONO_RGCTX_INFO_METHOD_GSHAREDVT_OUT_TRAMPOLINE_VIRT;
8890                                 else
8891                                         info_type = MONO_RGCTX_INFO_METHOD_GSHAREDVT_OUT_TRAMPOLINE;
8892                                 addr = emit_get_rgctx_gsharedvt_call (cfg, context_used, fsig, cmethod, info_type);
8893
8894                                 if (cfg->llvm_only) {
8895                                         // FIXME: Avoid initializing vtable_arg
8896                                         ins = emit_llvmonly_calli (cfg, fsig, sp, addr);
8897                                 } else {
8898                                         ins = (MonoInst*)mini_emit_calli (cfg, fsig, sp, addr, imt_arg, vtable_arg);
8899                                 }
8900                                 goto call_end;
8901                         }
8902
8903                         /* Generic sharing */
8904
8905                         /*
8906                          * Use this if the callee is gsharedvt sharable too, since
8907                          * at runtime we might find an instantiation so the call cannot
8908                          * be patched (the 'no_patch' code path in mini-trampolines.c).
8909                          */
8910                         if (context_used && !imt_arg && !array_rank && !delegate_invoke &&
8911                                 (!mono_method_is_generic_sharable_full (cmethod, TRUE, FALSE, FALSE) ||
8912                                  !mono_class_generic_sharing_enabled (cmethod->klass)) &&
8913                                 (!virtual_ || MONO_METHOD_IS_FINAL (cmethod) ||
8914                                  !(cmethod->flags & METHOD_ATTRIBUTE_VIRTUAL))) {
8915                                 INLINE_FAILURE ("gshared");
8916
8917                                 g_assert (cfg->gshared && cmethod);
8918                                 g_assert (!addr);
8919
8920                                 /*
8921                                  * We are compiling a call to a
8922                                  * generic method from shared code,
8923                                  * which means that we have to look up
8924                                  * the method in the rgctx and do an
8925                                  * indirect call.
8926                                  */
8927                                 if (fsig->hasthis)
8928                                         MONO_EMIT_NEW_CHECK_THIS (cfg, sp [0]->dreg);
8929
8930                                 if (cfg->llvm_only) {
8931                                         if (cfg->gsharedvt && mini_is_gsharedvt_variable_signature (fsig))
8932                                                 addr = emit_get_rgctx_method (cfg, context_used, cmethod, MONO_RGCTX_INFO_GSHAREDVT_OUT_WRAPPER);
8933                                         else
8934                                                 addr = emit_get_rgctx_method (cfg, context_used, cmethod, MONO_RGCTX_INFO_GENERIC_METHOD_CODE);
8935                                         // FIXME: Avoid initializing imt_arg/vtable_arg
8936                                         ins = emit_llvmonly_calli (cfg, fsig, sp, addr);
8937                                 } else {
8938                                         addr = emit_get_rgctx_method (cfg, context_used, cmethod, MONO_RGCTX_INFO_GENERIC_METHOD_CODE);
8939                                         ins = (MonoInst*)mini_emit_calli (cfg, fsig, sp, addr, imt_arg, vtable_arg);
8940                                 }
8941                                 goto call_end;
8942                         }
8943
8944                         /* Direct calls to icalls */
8945                         if (direct_icall) {
8946                                 MonoMethod *wrapper;
8947                                 int costs;
8948
8949                                 /* Inline the wrapper */
8950                                 wrapper = mono_marshal_get_native_wrapper (cmethod, TRUE, cfg->compile_aot);
8951
8952                                 costs = inline_method (cfg, wrapper, fsig, sp, ip, cfg->real_offset, TRUE);
8953                                 g_assert (costs > 0);
8954                                 cfg->real_offset += 5;
8955
8956                                 if (!MONO_TYPE_IS_VOID (fsig->ret)) {
8957                                         /* *sp is already set by inline_method */
8958                                         sp++;
8959                                         push_res = FALSE;
8960                                 }
8961
8962                                 inline_costs += costs;
8963
8964                                 goto call_end;
8965                         }
8966
8967                         /* Array methods */
8968                         if (array_rank) {
8969                                 MonoInst *addr;
8970
8971                                 if (strcmp (cmethod->name, "Set") == 0) { /* array Set */
8972                                         MonoInst *val = sp [fsig->param_count];
8973
8974                                         if (val->type == STACK_OBJ) {
8975                                                 MonoInst *iargs [2];
8976
8977                                                 iargs [0] = sp [0];
8978                                                 iargs [1] = val;
8979
8980                                                 mono_emit_jit_icall (cfg, mono_helper_stelem_ref_check, iargs);
8981                                         }
8982
8983                                         addr = mini_emit_ldelema_ins (cfg, cmethod, sp, ip, TRUE);
8984                                         EMIT_NEW_STORE_MEMBASE_TYPE (cfg, ins, fsig->params [fsig->param_count - 1], addr->dreg, 0, val->dreg);
8985                                         if (cfg->gen_write_barriers && val->type == STACK_OBJ && !MONO_INS_IS_PCONST_NULL (val))
8986                                                 mini_emit_write_barrier (cfg, addr, val);
8987                                         if (cfg->gen_write_barriers && mini_is_gsharedvt_klass (cmethod->klass))
8988                                                 GSHAREDVT_FAILURE (*ip);
8989                                 } else if (strcmp (cmethod->name, "Get") == 0) { /* array Get */
8990                                         addr = mini_emit_ldelema_ins (cfg, cmethod, sp, ip, FALSE);
8991
8992                                         EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, fsig->ret, addr->dreg, 0);
8993                                 } else if (strcmp (cmethod->name, "Address") == 0) { /* array Address */
8994                                         if (!cmethod->klass->element_class->valuetype && !readonly)
8995                                                 mini_emit_check_array_type (cfg, sp [0], cmethod->klass);
8996                                         CHECK_TYPELOAD (cmethod->klass);
8997
8998                                         readonly = FALSE;
8999                                         addr = mini_emit_ldelema_ins (cfg, cmethod, sp, ip, FALSE);
9000                                         ins = addr;
9001                                 } else {
9002                                         g_assert_not_reached ();
9003                                 }
9004
9005                                 emit_widen = FALSE;
9006                                 goto call_end;
9007                         }
9008
9009                         ins = mini_redirect_call (cfg, cmethod, fsig, sp, virtual_ ? sp [0] : NULL);
9010                         if (ins)
9011                                 goto call_end;
9012
9013                         /* Tail prefix / tail call optimization */
9014
9015                         /* FIXME: Enabling TAILC breaks some inlining/stack trace/etc tests */
9016                         /* FIXME: runtime generic context pointer for jumps? */
9017                         /* FIXME: handle this for generic sharing eventually */
9018                         if ((ins_flag & MONO_INST_TAILCALL) &&
9019                                 !vtable_arg && !cfg->gshared && is_supported_tail_call (cfg, method, cmethod, fsig, call_opcode))
9020                                 supported_tail_call = TRUE;
9021
9022                         if (supported_tail_call) {
9023                                 MonoCallInst *call;
9024
9025                                 /* Prevent inlining of methods with tail calls (the call stack would be altered) */
9026                                 INLINE_FAILURE ("tail call");
9027
9028                                 //printf ("HIT: %s -> %s\n", mono_method_full_name (cfg->method, TRUE), mono_method_full_name (cmethod, TRUE));
9029
9030                                 if (cfg->backend->have_op_tail_call) {
9031                                         /* Handle tail calls similarly to normal calls */
9032                                         tail_call = TRUE;
9033                                 } else {
9034                                         mini_profiler_emit_tail_call (cfg, cmethod);
9035
9036                                         MONO_INST_NEW_CALL (cfg, call, OP_JMP);
9037                                         call->tail_call = TRUE;
9038                                         call->method = cmethod;
9039                                         call->signature = mono_method_signature (cmethod);
9040
9041                                         /*
9042                                          * We implement tail calls by storing the actual arguments into the
9043                                          * argument variables, then emitting a CEE_JMP.
9044                                          */
9045                                         for (i = 0; i < n; ++i) {
9046                                                 /* Prevent argument from being register allocated */
9047                                                 arg_array [i]->flags |= MONO_INST_VOLATILE;
9048                                                 EMIT_NEW_ARGSTORE (cfg, ins, i, sp [i]);
9049                                         }
9050                                         ins = (MonoInst*)call;
9051                                         ins->inst_p0 = cmethod;
9052                                         ins->inst_p1 = arg_array [0];
9053                                         MONO_ADD_INS (cfg->cbb, ins);
9054                                         link_bblock (cfg, cfg->cbb, end_bblock);
9055                                         start_new_bblock = 1;
9056
9057                                         // FIXME: Eliminate unreachable epilogs
9058
9059                                         /*
9060                                          * OP_TAILCALL has no return value, so skip the CEE_RET if it is
9061                                          * only reachable from this call.
9062                                          */
9063                                         GET_BBLOCK (cfg, tblock, ip + 5);
9064                                         if (tblock == cfg->cbb || tblock->in_count == 0)
9065                                                 skip_ret = TRUE;
9066                                         push_res = FALSE;
9067
9068                                         goto call_end;
9069                                 }
9070                         }
9071
9072                         /*
9073                          * Virtual calls in llvm-only mode.
9074                          */
9075                         if (cfg->llvm_only && virtual_ && cmethod && (cmethod->flags & METHOD_ATTRIBUTE_VIRTUAL)) {
9076                                 ins = emit_llvmonly_virtual_call (cfg, cmethod, fsig, context_used, sp);
9077                                 goto call_end;
9078                         }
9079
9080                         /* Common call */
9081                         if (!(method->iflags & METHOD_IMPL_ATTRIBUTE_AGGRESSIVE_INLINING) && !(cmethod->iflags & METHOD_IMPL_ATTRIBUTE_AGGRESSIVE_INLINING))
9082                                 INLINE_FAILURE ("call");
9083                         ins = mono_emit_method_call_full (cfg, cmethod, fsig, tail_call, sp, virtual_ ? sp [0] : NULL,
9084                                                                                           imt_arg, vtable_arg);
9085
9086                         if (tail_call && !cfg->llvm_only) {
9087                                 link_bblock (cfg, cfg->cbb, end_bblock);
9088                                 start_new_bblock = 1;
9089
9090                                 // FIXME: Eliminate unreachable epilogs
9091
9092                                 /*
9093                                  * OP_TAILCALL has no return value, so skip the CEE_RET if it is
9094                                  * only reachable from this call.
9095                                  */
9096                                 GET_BBLOCK (cfg, tblock, ip + 5);
9097                                 if (tblock == cfg->cbb || tblock->in_count == 0)
9098                                         skip_ret = TRUE;
9099                                 push_res = FALSE;
9100                         }
9101
9102                         call_end:
9103
9104                         /* End of call, INS should contain the result of the call, if any */
9105
9106                         if (push_res && !MONO_TYPE_IS_VOID (fsig->ret)) {
9107                                 g_assert (ins);
9108                                 if (emit_widen)
9109                                         *sp++ = mono_emit_widen_call_res (cfg, ins, fsig);
9110                                 else
9111                                         *sp++ = ins;
9112                         }
9113
9114                         if (keep_this_alive) {
9115                                 MonoInst *dummy_use;
9116
9117                                 /* See mono_emit_method_call_full () */
9118                                 EMIT_NEW_DUMMY_USE (cfg, dummy_use, keep_this_alive);
9119                         }
9120
9121                         if (cfg->llvm_only && cmethod && method_needs_stack_walk (cfg, cmethod)) {
9122                                 /*
9123                                  * Clang can convert these calls to tail calls which screw up the stack
9124                                  * walk. This happens even when the -fno-optimize-sibling-calls
9125                                  * option is passed to clang.
9126                                  * Work around this by emitting a dummy call.
9127                                  */
9128                                 mono_emit_jit_icall (cfg, mono_dummy_jit_icall, NULL);
9129                         }
9130
9131                         CHECK_CFG_EXCEPTION;
9132
9133                         ip += 5;
9134                         if (skip_ret) {
9135                                 g_assert (*ip == CEE_RET);
9136                                 ip += 1;
9137                         }
9138                         ins_flag = 0;
9139                         constrained_class = NULL;
9140                         if (need_seq_point)
9141                                 emit_seq_point (cfg, method, ip, FALSE, TRUE);
9142                         break;
9143                 }
9144                 case CEE_RET:
9145                         mini_profiler_emit_leave (cfg, sig->ret->type != MONO_TYPE_VOID ? sp [-1] : NULL);
9146
9147                         if (cfg->method != method) {
9148                                 /* return from inlined method */
9149                                 /*
9150                                  * If in_count == 0, that means the ret is unreachable due to
9151                                  * being preceeded by a throw. In that case, inline_method () will
9152                                  * handle setting the return value
9153                                  * (test case: test_0_inline_throw ()).
9154                                  */
9155                                 if (return_var && cfg->cbb->in_count) {
9156                                         MonoType *ret_type = mono_method_signature (method)->ret;
9157
9158                                         MonoInst *store;
9159                                         CHECK_STACK (1);
9160                                         --sp;
9161
9162                                         if ((method->wrapper_type == MONO_WRAPPER_DYNAMIC_METHOD || method->wrapper_type == MONO_WRAPPER_NONE) && target_type_is_incompatible (cfg, ret_type, *sp))
9163                                                 UNVERIFIED;
9164
9165                                         //g_assert (returnvar != -1);
9166                                         EMIT_NEW_TEMPSTORE (cfg, store, return_var->inst_c0, *sp);
9167                                         cfg->ret_var_set = TRUE;
9168                                 }
9169                         } else {
9170                                 if (cfg->lmf_var && cfg->cbb->in_count && !cfg->llvm_only)
9171                                         emit_pop_lmf (cfg);
9172
9173                                 if (cfg->ret) {
9174                                         MonoType *ret_type = mini_get_underlying_type (mono_method_signature (method)->ret);
9175
9176                                         if (seq_points && !sym_seq_points) {
9177                                                 /*
9178                                                  * Place a seq point here too even through the IL stack is not
9179                                                  * empty, so a step over on
9180                                                  * call <FOO>
9181                                                  * ret
9182                                                  * will work correctly.
9183                                                  */
9184                                                 NEW_SEQ_POINT (cfg, ins, ip - header->code, TRUE);
9185                                                 MONO_ADD_INS (cfg->cbb, ins);
9186                                         }
9187
9188                                         g_assert (!return_var);
9189                                         CHECK_STACK (1);
9190                                         --sp;
9191
9192                                         if ((method->wrapper_type == MONO_WRAPPER_DYNAMIC_METHOD || method->wrapper_type == MONO_WRAPPER_NONE) && target_type_is_incompatible (cfg, ret_type, *sp))
9193                                                 UNVERIFIED;
9194
9195                                         emit_setret (cfg, *sp);
9196                                 }
9197                         }
9198                         if (sp != stack_start)
9199                                 UNVERIFIED;
9200                         MONO_INST_NEW (cfg, ins, OP_BR);
9201                         ip++;
9202                         ins->inst_target_bb = end_bblock;
9203                         MONO_ADD_INS (cfg->cbb, ins);
9204                         link_bblock (cfg, cfg->cbb, end_bblock);
9205                         start_new_bblock = 1;
9206                         break;
9207                 case CEE_BR_S:
9208                         CHECK_OPSIZE (2);
9209                         MONO_INST_NEW (cfg, ins, OP_BR);
9210                         ip++;
9211                         target = ip + 1 + (signed char)(*ip);
9212                         ++ip;
9213                         GET_BBLOCK (cfg, tblock, target);
9214                         link_bblock (cfg, cfg->cbb, tblock);
9215                         ins->inst_target_bb = tblock;
9216                         if (sp != stack_start) {
9217                                 handle_stack_args (cfg, stack_start, sp - stack_start);
9218                                 sp = stack_start;
9219                                 CHECK_UNVERIFIABLE (cfg);
9220                         }
9221                         MONO_ADD_INS (cfg->cbb, ins);
9222                         start_new_bblock = 1;
9223                         inline_costs += BRANCH_COST;
9224                         break;
9225                 case CEE_BEQ_S:
9226                 case CEE_BGE_S:
9227                 case CEE_BGT_S:
9228                 case CEE_BLE_S:
9229                 case CEE_BLT_S:
9230                 case CEE_BNE_UN_S:
9231                 case CEE_BGE_UN_S:
9232                 case CEE_BGT_UN_S:
9233                 case CEE_BLE_UN_S:
9234                 case CEE_BLT_UN_S:
9235                         CHECK_OPSIZE (2);
9236                         CHECK_STACK (2);
9237                         MONO_INST_NEW (cfg, ins, *ip + BIG_BRANCH_OFFSET);
9238                         ip++;
9239                         target = ip + 1 + *(signed char*)ip;
9240                         ip++;
9241
9242                         ADD_BINCOND (NULL);
9243
9244                         sp = stack_start;
9245                         inline_costs += BRANCH_COST;
9246                         break;
9247                 case CEE_BR:
9248                         CHECK_OPSIZE (5);
9249                         MONO_INST_NEW (cfg, ins, OP_BR);
9250                         ip++;
9251
9252                         target = ip + 4 + (gint32)read32(ip);
9253                         ip += 4;
9254                         GET_BBLOCK (cfg, tblock, target);
9255                         link_bblock (cfg, cfg->cbb, tblock);
9256                         ins->inst_target_bb = tblock;
9257                         if (sp != stack_start) {
9258                                 handle_stack_args (cfg, stack_start, sp - stack_start);
9259                                 sp = stack_start;
9260                                 CHECK_UNVERIFIABLE (cfg);
9261                         }
9262
9263                         MONO_ADD_INS (cfg->cbb, ins);
9264
9265                         start_new_bblock = 1;
9266                         inline_costs += BRANCH_COST;
9267                         break;
9268                 case CEE_BRFALSE_S:
9269                 case CEE_BRTRUE_S:
9270                 case CEE_BRFALSE:
9271                 case CEE_BRTRUE: {
9272                         MonoInst *cmp;
9273                         gboolean is_short = ((*ip) == CEE_BRFALSE_S) || ((*ip) == CEE_BRTRUE_S);
9274                         gboolean is_true = ((*ip) == CEE_BRTRUE_S) || ((*ip) == CEE_BRTRUE);
9275                         guint32 opsize = is_short ? 1 : 4;
9276
9277                         CHECK_OPSIZE (opsize);
9278                         CHECK_STACK (1);
9279                         if (sp [-1]->type == STACK_VTYPE || sp [-1]->type == STACK_R8)
9280                                 UNVERIFIED;
9281                         ip ++;
9282                         target = ip + opsize + (is_short ? *(signed char*)ip : (gint32)read32(ip));
9283                         ip += opsize;
9284
9285                         sp--;
9286
9287                         GET_BBLOCK (cfg, tblock, target);
9288                         link_bblock (cfg, cfg->cbb, tblock);
9289                         GET_BBLOCK (cfg, tblock, ip);
9290                         link_bblock (cfg, cfg->cbb, tblock);
9291
9292                         if (sp != stack_start) {
9293                                 handle_stack_args (cfg, stack_start, sp - stack_start);
9294                                 CHECK_UNVERIFIABLE (cfg);
9295                         }
9296
9297                         MONO_INST_NEW(cfg, cmp, OP_ICOMPARE_IMM);
9298                         cmp->sreg1 = sp [0]->dreg;
9299                         type_from_op (cfg, cmp, sp [0], NULL);
9300                         CHECK_TYPE (cmp);
9301
9302 #if SIZEOF_REGISTER == 4
9303                         if (cmp->opcode == OP_LCOMPARE_IMM) {
9304                                 /* Convert it to OP_LCOMPARE */
9305                                 MONO_INST_NEW (cfg, ins, OP_I8CONST);
9306                                 ins->type = STACK_I8;
9307                                 ins->dreg = alloc_dreg (cfg, STACK_I8);
9308                                 ins->inst_l = 0;
9309                                 MONO_ADD_INS (cfg->cbb, ins);
9310                                 cmp->opcode = OP_LCOMPARE;
9311                                 cmp->sreg2 = ins->dreg;
9312                         }
9313 #endif
9314                         MONO_ADD_INS (cfg->cbb, cmp);
9315
9316                         MONO_INST_NEW (cfg, ins, is_true ? CEE_BNE_UN : CEE_BEQ);
9317                         type_from_op (cfg, ins, sp [0], NULL);
9318                         MONO_ADD_INS (cfg->cbb, ins);
9319                         ins->inst_many_bb = (MonoBasicBlock **)mono_mempool_alloc (cfg->mempool, sizeof(gpointer)*2);
9320                         GET_BBLOCK (cfg, tblock, target);
9321                         ins->inst_true_bb = tblock;
9322                         GET_BBLOCK (cfg, tblock, ip);
9323                         ins->inst_false_bb = tblock;
9324                         start_new_bblock = 2;
9325
9326                         sp = stack_start;
9327                         inline_costs += BRANCH_COST;
9328                         break;
9329                 }
9330                 case CEE_BEQ:
9331                 case CEE_BGE:
9332                 case CEE_BGT:
9333                 case CEE_BLE:
9334                 case CEE_BLT:
9335                 case CEE_BNE_UN:
9336                 case CEE_BGE_UN:
9337                 case CEE_BGT_UN:
9338                 case CEE_BLE_UN:
9339                 case CEE_BLT_UN:
9340                         CHECK_OPSIZE (5);
9341                         CHECK_STACK (2);
9342                         MONO_INST_NEW (cfg, ins, *ip);
9343                         ip++;
9344                         target = ip + 4 + (gint32)read32(ip);
9345                         ip += 4;
9346
9347                         ADD_BINCOND (NULL);
9348
9349                         sp = stack_start;
9350                         inline_costs += BRANCH_COST;
9351                         break;
9352                 case CEE_SWITCH: {
9353                         MonoInst *src1;
9354                         MonoBasicBlock **targets;
9355                         MonoBasicBlock *default_bblock;
9356                         MonoJumpInfoBBTable *table;
9357                         int offset_reg = alloc_preg (cfg);
9358                         int target_reg = alloc_preg (cfg);
9359                         int table_reg = alloc_preg (cfg);
9360                         int sum_reg = alloc_preg (cfg);
9361                         gboolean use_op_switch;
9362
9363                         CHECK_OPSIZE (5);
9364                         CHECK_STACK (1);
9365                         n = read32 (ip + 1);
9366                         --sp;
9367                         src1 = sp [0];
9368                         if ((src1->type != STACK_I4) && (src1->type != STACK_PTR))
9369                                 UNVERIFIED;
9370
9371                         ip += 5;
9372                         CHECK_OPSIZE (n * sizeof (guint32));
9373                         target = ip + n * sizeof (guint32);
9374
9375                         GET_BBLOCK (cfg, default_bblock, target);
9376                         default_bblock->flags |= BB_INDIRECT_JUMP_TARGET;
9377
9378                         targets = (MonoBasicBlock **)mono_mempool_alloc (cfg->mempool, sizeof (MonoBasicBlock*) * n);
9379                         for (i = 0; i < n; ++i) {
9380                                 GET_BBLOCK (cfg, tblock, target + (gint32)read32(ip));
9381                                 targets [i] = tblock;
9382                                 targets [i]->flags |= BB_INDIRECT_JUMP_TARGET;
9383                                 ip += 4;
9384                         }
9385
9386                         if (sp != stack_start) {
9387                                 /*
9388                                  * Link the current bb with the targets as well, so handle_stack_args
9389                                  * will set their in_stack correctly.
9390                                  */
9391                                 link_bblock (cfg, cfg->cbb, default_bblock);
9392                                 for (i = 0; i < n; ++i)
9393                                         link_bblock (cfg, cfg->cbb, targets [i]);
9394
9395                                 handle_stack_args (cfg, stack_start, sp - stack_start);
9396                                 sp = stack_start;
9397                                 CHECK_UNVERIFIABLE (cfg);
9398
9399                                 /* Undo the links */
9400                                 mono_unlink_bblock (cfg, cfg->cbb, default_bblock);
9401                                 for (i = 0; i < n; ++i)
9402                                         mono_unlink_bblock (cfg, cfg->cbb, targets [i]);
9403                         }
9404
9405                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_ICOMPARE_IMM, -1, src1->dreg, n);
9406                         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_IBGE_UN, default_bblock);
9407
9408                         for (i = 0; i < n; ++i)
9409                                 link_bblock (cfg, cfg->cbb, targets [i]);
9410
9411                         table = (MonoJumpInfoBBTable *)mono_mempool_alloc (cfg->mempool, sizeof (MonoJumpInfoBBTable));
9412                         table->table = targets;
9413                         table->table_size = n;
9414
9415                         use_op_switch = FALSE;
9416 #ifdef TARGET_ARM
9417                         /* ARM implements SWITCH statements differently */
9418                         /* FIXME: Make it use the generic implementation */
9419                         if (!cfg->compile_aot)
9420                                 use_op_switch = TRUE;
9421 #endif
9422
9423                         if (COMPILE_LLVM (cfg))
9424                                 use_op_switch = TRUE;
9425
9426                         cfg->cbb->has_jump_table = 1;
9427
9428                         if (use_op_switch) {
9429                                 MONO_INST_NEW (cfg, ins, OP_SWITCH);
9430                                 ins->sreg1 = src1->dreg;
9431                                 ins->inst_p0 = table;
9432                                 ins->inst_many_bb = targets;
9433                                 ins->klass = (MonoClass *)GUINT_TO_POINTER (n);
9434                                 MONO_ADD_INS (cfg->cbb, ins);
9435                         } else {
9436                                 if (sizeof (gpointer) == 8)
9437                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_SHL_IMM, offset_reg, src1->dreg, 3);
9438                                 else
9439                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_SHL_IMM, offset_reg, src1->dreg, 2);
9440
9441 #if SIZEOF_REGISTER == 8
9442                                 /* The upper word might not be zero, and we add it to a 64 bit address later */
9443                                 MONO_EMIT_NEW_UNALU (cfg, OP_ZEXT_I4, offset_reg, offset_reg);
9444 #endif
9445
9446                                 if (cfg->compile_aot) {
9447                                         MONO_EMIT_NEW_AOTCONST (cfg, table_reg, table, MONO_PATCH_INFO_SWITCH);
9448                                 } else {
9449                                         MONO_INST_NEW (cfg, ins, OP_JUMP_TABLE);
9450                                         ins->inst_c1 = MONO_PATCH_INFO_SWITCH;
9451                                         ins->inst_p0 = table;
9452                                         ins->dreg = table_reg;
9453                                         MONO_ADD_INS (cfg->cbb, ins);
9454                                 }
9455
9456                                 /* FIXME: Use load_memindex */
9457                                 MONO_EMIT_NEW_BIALU (cfg, OP_PADD, sum_reg, table_reg, offset_reg);
9458                                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, target_reg, sum_reg, 0);
9459                                 MONO_EMIT_NEW_UNALU (cfg, OP_BR_REG, -1, target_reg);
9460                         }
9461                         start_new_bblock = 1;
9462                         inline_costs += (BRANCH_COST * 2);
9463                         break;
9464                 }
9465                 case CEE_LDIND_I1:
9466                 case CEE_LDIND_U1:
9467                 case CEE_LDIND_I2:
9468                 case CEE_LDIND_U2:
9469                 case CEE_LDIND_I4:
9470                 case CEE_LDIND_U4:
9471                 case CEE_LDIND_I8:
9472                 case CEE_LDIND_I:
9473                 case CEE_LDIND_R4:
9474                 case CEE_LDIND_R8:
9475                 case CEE_LDIND_REF:
9476                         CHECK_STACK (1);
9477                         --sp;
9478
9479                         ins = mini_emit_memory_load (cfg, &ldind_to_type (*ip)->byval_arg, sp [0], 0, ins_flag);
9480                         *sp++ = ins;
9481                         ins_flag = 0;
9482                         ++ip;
9483                         break;
9484                 case CEE_STIND_REF:
9485                 case CEE_STIND_I1:
9486                 case CEE_STIND_I2:
9487                 case CEE_STIND_I4:
9488                 case CEE_STIND_I8:
9489                 case CEE_STIND_R4:
9490                 case CEE_STIND_R8:
9491                 case CEE_STIND_I:
9492                         CHECK_STACK (2);
9493                         sp -= 2;
9494
9495                         if (ins_flag & MONO_INST_VOLATILE) {
9496                                 /* Volatile stores have release semantics, see 12.6.7 in Ecma 335 */
9497                                 mini_emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_REL);
9498                         }
9499
9500                         NEW_STORE_MEMBASE (cfg, ins, stind_to_store_membase (*ip), sp [0]->dreg, 0, sp [1]->dreg);
9501                         ins->flags |= ins_flag;
9502                         ins_flag = 0;
9503
9504                         MONO_ADD_INS (cfg->cbb, ins);
9505
9506                         if (cfg->gen_write_barriers && *ip == CEE_STIND_REF && method->wrapper_type != MONO_WRAPPER_WRITE_BARRIER && !MONO_INS_IS_PCONST_NULL (sp [1]))
9507                                 mini_emit_write_barrier (cfg, sp [0], sp [1]);
9508
9509                         inline_costs += 1;
9510                         ++ip;
9511                         break;
9512
9513                 case CEE_MUL:
9514                         CHECK_STACK (2);
9515
9516                         MONO_INST_NEW (cfg, ins, (*ip));
9517                         sp -= 2;
9518                         ins->sreg1 = sp [0]->dreg;
9519                         ins->sreg2 = sp [1]->dreg;
9520                         type_from_op (cfg, ins, sp [0], sp [1]);
9521                         CHECK_TYPE (ins);
9522                         ins->dreg = alloc_dreg ((cfg), (MonoStackType)(ins)->type);
9523
9524                         /* Use the immediate opcodes if possible */
9525                         if ((sp [1]->opcode == OP_ICONST) && mono_arch_is_inst_imm (sp [1]->inst_c0)) {
9526                                 int imm_opcode = mono_op_to_op_imm_noemul (ins->opcode);
9527                                 if (imm_opcode != -1) {
9528                                         ins->opcode = imm_opcode;
9529                                         ins->inst_p1 = (gpointer)(gssize)(sp [1]->inst_c0);
9530                                         ins->sreg2 = -1;
9531
9532                                         NULLIFY_INS (sp [1]);
9533                                 }
9534                         }
9535
9536                         MONO_ADD_INS ((cfg)->cbb, (ins));
9537
9538                         *sp++ = mono_decompose_opcode (cfg, ins);
9539                         ip++;
9540                         break;
9541                 case CEE_ADD:
9542                 case CEE_SUB:
9543                 case CEE_DIV:
9544                 case CEE_DIV_UN:
9545                 case CEE_REM:
9546                 case CEE_REM_UN:
9547                 case CEE_AND:
9548                 case CEE_OR:
9549                 case CEE_XOR:
9550                 case CEE_SHL:
9551                 case CEE_SHR:
9552                 case CEE_SHR_UN:
9553                         CHECK_STACK (2);
9554
9555                         MONO_INST_NEW (cfg, ins, (*ip));
9556                         sp -= 2;
9557                         ins->sreg1 = sp [0]->dreg;
9558                         ins->sreg2 = sp [1]->dreg;
9559                         type_from_op (cfg, ins, sp [0], sp [1]);
9560                         CHECK_TYPE (ins);
9561                         add_widen_op (cfg, ins, &sp [0], &sp [1]);
9562                         ins->dreg = alloc_dreg ((cfg), (MonoStackType)(ins)->type);
9563
9564                         /* FIXME: Pass opcode to is_inst_imm */
9565
9566                         /* Use the immediate opcodes if possible */
9567                         if (((sp [1]->opcode == OP_ICONST) || (sp [1]->opcode == OP_I8CONST)) && mono_arch_is_inst_imm (sp [1]->opcode == OP_ICONST ? sp [1]->inst_c0 : sp [1]->inst_l)) {
9568                                 int imm_opcode = mono_op_to_op_imm_noemul (ins->opcode);
9569                                 if (imm_opcode != -1) {
9570                                         ins->opcode = imm_opcode;
9571                                         if (sp [1]->opcode == OP_I8CONST) {
9572 #if SIZEOF_REGISTER == 8
9573                                                 ins->inst_imm = sp [1]->inst_l;
9574 #else
9575                                                 ins->inst_ls_word = sp [1]->inst_ls_word;
9576                                                 ins->inst_ms_word = sp [1]->inst_ms_word;
9577 #endif
9578                                         }
9579                                         else
9580                                                 ins->inst_imm = (gssize)(sp [1]->inst_c0);
9581                                         ins->sreg2 = -1;
9582
9583                                         /* Might be followed by an instruction added by add_widen_op */
9584                                         if (sp [1]->next == NULL)
9585                                                 NULLIFY_INS (sp [1]);
9586                                 }
9587                         }
9588                         MONO_ADD_INS ((cfg)->cbb, (ins));
9589
9590                         *sp++ = mono_decompose_opcode (cfg, ins);
9591                         ip++;
9592                         break;
9593                 case CEE_NEG:
9594                 case CEE_NOT:
9595                 case CEE_CONV_I1:
9596                 case CEE_CONV_I2:
9597                 case CEE_CONV_I4:
9598                 case CEE_CONV_R4:
9599                 case CEE_CONV_R8:
9600                 case CEE_CONV_U4:
9601                 case CEE_CONV_I8:
9602                 case CEE_CONV_U8:
9603                 case CEE_CONV_OVF_I8:
9604                 case CEE_CONV_OVF_U8:
9605                 case CEE_CONV_R_UN:
9606                         CHECK_STACK (1);
9607
9608                         /* Special case this earlier so we have long constants in the IR */
9609                         if ((((*ip) == CEE_CONV_I8) || ((*ip) == CEE_CONV_U8)) && (sp [-1]->opcode == OP_ICONST)) {
9610                                 int data = sp [-1]->inst_c0;
9611                                 sp [-1]->opcode = OP_I8CONST;
9612                                 sp [-1]->type = STACK_I8;
9613 #if SIZEOF_REGISTER == 8
9614                                 if ((*ip) == CEE_CONV_U8)
9615                                         sp [-1]->inst_c0 = (guint32)data;
9616                                 else
9617                                         sp [-1]->inst_c0 = data;
9618 #else
9619                                 sp [-1]->inst_ls_word = data;
9620                                 if ((*ip) == CEE_CONV_U8)
9621                                         sp [-1]->inst_ms_word = 0;
9622                                 else
9623                                         sp [-1]->inst_ms_word = (data < 0) ? -1 : 0;
9624 #endif
9625                                 sp [-1]->dreg = alloc_dreg (cfg, STACK_I8);
9626                         }
9627                         else {
9628                                 ADD_UNOP (*ip);
9629                         }
9630                         ip++;
9631                         break;
9632                 case CEE_CONV_OVF_I4:
9633                 case CEE_CONV_OVF_I1:
9634                 case CEE_CONV_OVF_I2:
9635                 case CEE_CONV_OVF_I:
9636                 case CEE_CONV_OVF_U:
9637                         CHECK_STACK (1);
9638
9639                         if (sp [-1]->type == STACK_R8 || sp [-1]->type == STACK_R4) {
9640                                 ADD_UNOP (CEE_CONV_OVF_I8);
9641                                 ADD_UNOP (*ip);
9642                         } else {
9643                                 ADD_UNOP (*ip);
9644                         }
9645                         ip++;
9646                         break;
9647                 case CEE_CONV_OVF_U1:
9648                 case CEE_CONV_OVF_U2:
9649                 case CEE_CONV_OVF_U4:
9650                         CHECK_STACK (1);
9651
9652                         if (sp [-1]->type == STACK_R8 || sp [-1]->type == STACK_R4) {
9653                                 ADD_UNOP (CEE_CONV_OVF_U8);
9654                                 ADD_UNOP (*ip);
9655                         } else {
9656                                 ADD_UNOP (*ip);
9657                         }
9658                         ip++;
9659                         break;
9660                 case CEE_CONV_OVF_I1_UN:
9661                 case CEE_CONV_OVF_I2_UN:
9662                 case CEE_CONV_OVF_I4_UN:
9663                 case CEE_CONV_OVF_I8_UN:
9664                 case CEE_CONV_OVF_U1_UN:
9665                 case CEE_CONV_OVF_U2_UN:
9666                 case CEE_CONV_OVF_U4_UN:
9667                 case CEE_CONV_OVF_U8_UN:
9668                 case CEE_CONV_OVF_I_UN:
9669                 case CEE_CONV_OVF_U_UN:
9670                 case CEE_CONV_U2:
9671                 case CEE_CONV_U1:
9672                 case CEE_CONV_I:
9673                 case CEE_CONV_U:
9674                         CHECK_STACK (1);
9675                         ADD_UNOP (*ip);
9676                         CHECK_CFG_EXCEPTION;
9677                         ip++;
9678                         break;
9679                 case CEE_ADD_OVF:
9680                 case CEE_ADD_OVF_UN:
9681                 case CEE_MUL_OVF:
9682                 case CEE_MUL_OVF_UN:
9683                 case CEE_SUB_OVF:
9684                 case CEE_SUB_OVF_UN:
9685                         CHECK_STACK (2);
9686                         ADD_BINOP (*ip);
9687                         ip++;
9688                         break;
9689                 case CEE_CPOBJ:
9690                         GSHAREDVT_FAILURE (*ip);
9691                         CHECK_OPSIZE (5);
9692                         CHECK_STACK (2);
9693                         token = read32 (ip + 1);
9694                         klass = mini_get_class (method, token, generic_context);
9695                         CHECK_TYPELOAD (klass);
9696                         sp -= 2;
9697                         mini_emit_memory_copy (cfg, sp [0], sp [1], klass, FALSE, ins_flag);
9698                         ins_flag = 0;
9699                         ip += 5;
9700                         break;
9701                 case CEE_LDOBJ: {
9702                         int loc_index = -1;
9703                         int stloc_len = 0;
9704
9705                         CHECK_OPSIZE (5);
9706                         CHECK_STACK (1);
9707                         --sp;
9708                         token = read32 (ip + 1);
9709                         klass = mini_get_class (method, token, generic_context);
9710                         CHECK_TYPELOAD (klass);
9711
9712                         /* Optimize the common ldobj+stloc combination */
9713                         switch (ip [5]) {
9714                         case CEE_STLOC_S:
9715                                 loc_index = ip [6];
9716                                 stloc_len = 2;
9717                                 break;
9718                         case CEE_STLOC_0:
9719                         case CEE_STLOC_1:
9720                         case CEE_STLOC_2:
9721                         case CEE_STLOC_3:
9722                                 loc_index = ip [5] - CEE_STLOC_0;
9723                                 stloc_len = 1;
9724                                 break;
9725                         default:
9726                                 break;
9727                         }
9728
9729                         if ((loc_index != -1) && ip_in_bb (cfg, cfg->cbb, ip + 5)) {
9730                                 CHECK_LOCAL (loc_index);
9731
9732                                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, sp [0]->dreg, 0);
9733                                 ins->dreg = cfg->locals [loc_index]->dreg;
9734                                 ins->flags |= ins_flag;
9735                                 ip += 5;
9736                                 ip += stloc_len;
9737                                 if (ins_flag & MONO_INST_VOLATILE) {
9738                                         /* Volatile loads have acquire semantics, see 12.6.7 in Ecma 335 */
9739                                         mini_emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_ACQ);
9740                                 }
9741                                 ins_flag = 0;
9742                                 break;
9743                         }
9744
9745                         /* Optimize the ldobj+stobj combination */
9746                         if (((ip [5] == CEE_STOBJ) && ip_in_bb (cfg, cfg->cbb, ip + 5) && read32 (ip + 6) == token)) {
9747                                 CHECK_STACK (1);
9748
9749                                 sp --;
9750
9751                                 mini_emit_memory_copy (cfg, sp [0], sp [1], klass, FALSE, ins_flag);
9752
9753                                 ip += 5 + 5;
9754                                 ins_flag = 0;
9755                                 break;
9756                         }
9757
9758                         ins = mini_emit_memory_load (cfg, &klass->byval_arg, sp [0], 0, ins_flag);
9759                         *sp++ = ins;
9760
9761                         ip += 5;
9762                         ins_flag = 0;
9763                         inline_costs += 1;
9764                         break;
9765                 }
9766                 case CEE_LDSTR:
9767                         CHECK_STACK_OVF (1);
9768                         CHECK_OPSIZE (5);
9769                         n = read32 (ip + 1);
9770
9771                         if (method->wrapper_type == MONO_WRAPPER_DYNAMIC_METHOD) {
9772                                 EMIT_NEW_PCONST (cfg, ins, mono_method_get_wrapper_data (method, n));
9773                                 ins->type = STACK_OBJ;
9774                                 *sp = ins;
9775                         }
9776                         else if (method->wrapper_type != MONO_WRAPPER_NONE) {
9777                                 MonoInst *iargs [1];
9778                                 char *str = (char *)mono_method_get_wrapper_data (method, n);
9779
9780                                 if (cfg->compile_aot)
9781                                         EMIT_NEW_LDSTRLITCONST (cfg, iargs [0], str);
9782                                 else
9783                                         EMIT_NEW_PCONST (cfg, iargs [0], str);
9784                                 *sp = mono_emit_jit_icall (cfg, mono_string_new_wrapper, iargs);
9785                         } else {
9786                                 if (cfg->opt & MONO_OPT_SHARED) {
9787                                         MonoInst *iargs [3];
9788
9789                                         if (cfg->compile_aot) {
9790                                                 cfg->ldstr_list = g_list_prepend (cfg->ldstr_list, GINT_TO_POINTER (n));
9791                                         }
9792                                         EMIT_NEW_DOMAINCONST (cfg, iargs [0]);
9793                                         EMIT_NEW_IMAGECONST (cfg, iargs [1], image);
9794                                         EMIT_NEW_ICONST (cfg, iargs [2], mono_metadata_token_index (n));
9795                                         *sp = mono_emit_jit_icall (cfg, ves_icall_mono_ldstr, iargs);
9796                                         mono_ldstr_checked (cfg->domain, image, mono_metadata_token_index (n), &cfg->error);
9797                                         CHECK_CFG_ERROR;
9798                                 } else {
9799                                         if (cfg->cbb->out_of_line) {
9800                                                 MonoInst *iargs [2];
9801
9802                                                 if (image == mono_defaults.corlib) {
9803                                                         /*
9804                                                          * Avoid relocations in AOT and save some space by using a
9805                                                          * version of helper_ldstr specialized to mscorlib.
9806                                                          */
9807                                                         EMIT_NEW_ICONST (cfg, iargs [0], mono_metadata_token_index (n));
9808                                                         *sp = mono_emit_jit_icall (cfg, mono_helper_ldstr_mscorlib, iargs);
9809                                                 } else {
9810                                                         /* Avoid creating the string object */
9811                                                         EMIT_NEW_IMAGECONST (cfg, iargs [0], image);
9812                                                         EMIT_NEW_ICONST (cfg, iargs [1], mono_metadata_token_index (n));
9813                                                         *sp = mono_emit_jit_icall (cfg, mono_helper_ldstr, iargs);
9814                                                 }
9815                                         }
9816                                         else
9817                                         if (cfg->compile_aot) {
9818                                                 NEW_LDSTRCONST (cfg, ins, image, n);
9819                                                 *sp = ins;
9820                                                 MONO_ADD_INS (cfg->cbb, ins);
9821                                         }
9822                                         else {
9823                                                 NEW_PCONST (cfg, ins, NULL);
9824                                                 ins->type = STACK_OBJ;
9825                                                 ins->inst_p0 = mono_ldstr_checked (cfg->domain, image, mono_metadata_token_index (n), &cfg->error);
9826                                                 CHECK_CFG_ERROR;
9827
9828                                                 if (!ins->inst_p0)
9829                                                         OUT_OF_MEMORY_FAILURE;
9830
9831                                                 *sp = ins;
9832                                                 MONO_ADD_INS (cfg->cbb, ins);
9833                                         }
9834                                 }
9835                         }
9836
9837                         sp++;
9838                         ip += 5;
9839                         break;
9840                 case CEE_NEWOBJ: {
9841                         MonoInst *iargs [2];
9842                         MonoMethodSignature *fsig;
9843                         MonoInst this_ins;
9844                         MonoInst *alloc;
9845                         MonoInst *vtable_arg = NULL;
9846
9847                         CHECK_OPSIZE (5);
9848                         token = read32 (ip + 1);
9849                         cmethod = mini_get_method (cfg, method, token, NULL, generic_context);
9850                         CHECK_CFG_ERROR;
9851
9852                         fsig = mono_method_get_signature_checked (cmethod, image, token, generic_context, &cfg->error);
9853                         CHECK_CFG_ERROR;
9854
9855                         mono_save_token_info (cfg, image, token, cmethod);
9856
9857                         if (!mono_class_init (cmethod->klass))
9858                                 TYPE_LOAD_ERROR (cmethod->klass);
9859
9860                         context_used = mini_method_check_context_used (cfg, cmethod);
9861
9862                         if (!dont_verify && !cfg->skip_visibility) {
9863                                 MonoMethod *cil_method = cmethod;
9864                                 MonoMethod *target_method = cil_method;
9865
9866                                 if (method->is_inflated) {
9867                                         target_method = mini_get_method_allow_open (method, token, NULL, &(mono_method_get_generic_container (method_definition)->context), &cfg->error);
9868                                         CHECK_CFG_ERROR;
9869                                 }
9870
9871                                 if (!mono_method_can_access_method (method_definition, target_method) &&
9872                                         !mono_method_can_access_method (method, cil_method))
9873                                         emit_method_access_failure (cfg, method, cil_method);
9874                         }
9875
9876                         if (mono_security_core_clr_enabled ())
9877                                 ensure_method_is_allowed_to_call_method (cfg, method, cmethod);
9878
9879                         if (cfg->gshared && cmethod && cmethod->klass != method->klass && mono_class_is_ginst (cmethod->klass) && mono_method_is_generic_sharable (cmethod, TRUE) && mono_class_needs_cctor_run (cmethod->klass, method)) {
9880                                 emit_class_init (cfg, cmethod->klass);
9881                                 CHECK_TYPELOAD (cmethod->klass);
9882                         }
9883
9884                         /*
9885                         if (cfg->gsharedvt) {
9886                                 if (mini_is_gsharedvt_variable_signature (sig))
9887                                         GSHAREDVT_FAILURE (*ip);
9888                         }
9889                         */
9890
9891                         n = fsig->param_count;
9892                         CHECK_STACK (n);
9893
9894                         /*
9895                          * Generate smaller code for the common newobj <exception> instruction in
9896                          * argument checking code.
9897                          */
9898                         if (cfg->cbb->out_of_line && cmethod->klass->image == mono_defaults.corlib &&
9899                                 is_exception_class (cmethod->klass) && n <= 2 &&
9900                                 ((n < 1) || (!fsig->params [0]->byref && fsig->params [0]->type == MONO_TYPE_STRING)) &&
9901                                 ((n < 2) || (!fsig->params [1]->byref && fsig->params [1]->type == MONO_TYPE_STRING))) {
9902                                 MonoInst *iargs [3];
9903
9904                                 sp -= n;
9905
9906                                 EMIT_NEW_ICONST (cfg, iargs [0], cmethod->klass->type_token);
9907                                 switch (n) {
9908                                 case 0:
9909                                         *sp ++ = mono_emit_jit_icall (cfg, mono_create_corlib_exception_0, iargs);
9910                                         break;
9911                                 case 1:
9912                                         iargs [1] = sp [0];
9913                                         *sp ++ = mono_emit_jit_icall (cfg, mono_create_corlib_exception_1, iargs);
9914                                         break;
9915                                 case 2:
9916                                         iargs [1] = sp [0];
9917                                         iargs [2] = sp [1];
9918                                         *sp ++ = mono_emit_jit_icall (cfg, mono_create_corlib_exception_2, iargs);
9919                                         break;
9920                                 default:
9921                                         g_assert_not_reached ();
9922                                 }
9923
9924                                 ip += 5;
9925                                 inline_costs += 5;
9926                                 break;
9927                         }
9928
9929                         /* move the args to allow room for 'this' in the first position */
9930                         while (n--) {
9931                                 --sp;
9932                                 sp [1] = sp [0];
9933                         }
9934
9935                         /* check_call_signature () requires sp[0] to be set */
9936                         this_ins.type = STACK_OBJ;
9937                         sp [0] = &this_ins;
9938                         if (check_call_signature (cfg, fsig, sp))
9939                                 UNVERIFIED;
9940
9941                         iargs [0] = NULL;
9942
9943                         if (mini_class_is_system_array (cmethod->klass)) {
9944                                 *sp = emit_get_rgctx_method (cfg, context_used,
9945                                                                                          cmethod, MONO_RGCTX_INFO_METHOD);
9946
9947                                 /* Avoid varargs in the common case */
9948                                 if (fsig->param_count == 1)
9949                                         alloc = mono_emit_jit_icall (cfg, mono_array_new_1, sp);
9950                                 else if (fsig->param_count == 2)
9951                                         alloc = mono_emit_jit_icall (cfg, mono_array_new_2, sp);
9952                                 else if (fsig->param_count == 3)
9953                                         alloc = mono_emit_jit_icall (cfg, mono_array_new_3, sp);
9954                                 else if (fsig->param_count == 4)
9955                                         alloc = mono_emit_jit_icall (cfg, mono_array_new_4, sp);
9956                                 else
9957                                         alloc = handle_array_new (cfg, fsig->param_count, sp, ip);
9958                         } else if (cmethod->string_ctor) {
9959                                 g_assert (!context_used);
9960                                 g_assert (!vtable_arg);
9961                                 /* we simply pass a null pointer */
9962                                 EMIT_NEW_PCONST (cfg, *sp, NULL);
9963                                 /* now call the string ctor */
9964                                 alloc = mono_emit_method_call_full (cfg, cmethod, fsig, FALSE, sp, NULL, NULL, NULL);
9965                         } else {
9966                                 if (cmethod->klass->valuetype) {
9967                                         iargs [0] = mono_compile_create_var (cfg, &cmethod->klass->byval_arg, OP_LOCAL);
9968                                         emit_init_rvar (cfg, iargs [0]->dreg, &cmethod->klass->byval_arg);
9969                                         EMIT_NEW_TEMPLOADA (cfg, *sp, iargs [0]->inst_c0);
9970
9971                                         alloc = NULL;
9972
9973                                         /*
9974                                          * The code generated by mini_emit_virtual_call () expects
9975                                          * iargs [0] to be a boxed instance, but luckily the vcall
9976                                          * will be transformed into a normal call there.
9977                                          */
9978                                 } else if (context_used) {
9979                                         alloc = handle_alloc (cfg, cmethod->klass, FALSE, context_used);
9980                                         *sp = alloc;
9981                                 } else {
9982                                         MonoVTable *vtable = NULL;
9983
9984                                         if (!cfg->compile_aot)
9985                                                 vtable = mono_class_vtable (cfg->domain, cmethod->klass);
9986                                         CHECK_TYPELOAD (cmethod->klass);
9987
9988                                         /*
9989                                          * TypeInitializationExceptions thrown from the mono_runtime_class_init
9990                                          * call in mono_jit_runtime_invoke () can abort the finalizer thread.
9991                                          * As a workaround, we call class cctors before allocating objects.
9992                                          */
9993                                         if (mini_field_access_needs_cctor_run (cfg, method, cmethod->klass, vtable) && !(g_slist_find (class_inits, cmethod->klass))) {
9994                                                 emit_class_init (cfg, cmethod->klass);
9995                                                 if (cfg->verbose_level > 2)
9996                                                         printf ("class %s.%s needs init call for ctor\n", cmethod->klass->name_space, cmethod->klass->name);
9997                                                 class_inits = g_slist_prepend (class_inits, cmethod->klass);
9998                                         }
9999
10000                                         alloc = handle_alloc (cfg, cmethod->klass, FALSE, 0);
10001                                         *sp = alloc;
10002                                 }
10003                                 CHECK_CFG_EXCEPTION; /*for handle_alloc*/
10004
10005                                 if (alloc)
10006                                         MONO_EMIT_NEW_UNALU (cfg, OP_NOT_NULL, -1, alloc->dreg);
10007
10008                                 /* Now call the actual ctor */
10009                                 handle_ctor_call (cfg, cmethod, fsig, context_used, sp, ip, &inline_costs);
10010                                 CHECK_CFG_EXCEPTION;
10011                         }
10012
10013                         if (alloc == NULL) {
10014                                 /* Valuetype */
10015                                 EMIT_NEW_TEMPLOAD (cfg, ins, iargs [0]->inst_c0);
10016                                 type_to_eval_stack_type (cfg, &ins->klass->byval_arg, ins);
10017                                 *sp++= ins;
10018                         } else {
10019                                 *sp++ = alloc;
10020                         }
10021
10022                         ip += 5;
10023                         inline_costs += 5;
10024                         if (!(seq_point_locs && mono_bitset_test_fast (seq_point_locs, ip - header->code)))
10025                                 emit_seq_point (cfg, method, ip, FALSE, TRUE);
10026                         break;
10027                 }
10028                 case CEE_CASTCLASS:
10029                 case CEE_ISINST: {
10030                         CHECK_STACK (1);
10031                         --sp;
10032                         CHECK_OPSIZE (5);
10033                         token = read32 (ip + 1);
10034                         klass = mini_get_class (method, token, generic_context);
10035                         CHECK_TYPELOAD (klass);
10036                         if (sp [0]->type != STACK_OBJ)
10037                                 UNVERIFIED;
10038
10039                         MONO_INST_NEW (cfg, ins, *ip == CEE_ISINST ? OP_ISINST : OP_CASTCLASS);
10040                         ins->dreg = alloc_preg (cfg);
10041                         ins->sreg1 = (*sp)->dreg;
10042                         ins->klass = klass;
10043                         ins->type = STACK_OBJ;
10044                         MONO_ADD_INS (cfg->cbb, ins);
10045
10046                         CHECK_CFG_EXCEPTION;
10047                         *sp++ = ins;
10048                         ip += 5;
10049
10050                         cfg->flags |= MONO_CFG_HAS_TYPE_CHECK;
10051                         break;
10052                 }
10053                 case CEE_UNBOX_ANY: {
10054                         MonoInst *res, *addr;
10055
10056                         CHECK_STACK (1);
10057                         --sp;
10058                         CHECK_OPSIZE (5);
10059                         token = read32 (ip + 1);
10060                         klass = mini_get_class (method, token, generic_context);
10061                         CHECK_TYPELOAD (klass);
10062
10063                         mono_save_token_info (cfg, image, token, klass);
10064
10065                         context_used = mini_class_check_context_used (cfg, klass);
10066
10067                         if (mini_is_gsharedvt_klass (klass)) {
10068                                 res = handle_unbox_gsharedvt (cfg, klass, *sp);
10069                                 inline_costs += 2;
10070                         } else if (generic_class_is_reference_type (cfg, klass)) {
10071                                 if (MONO_INS_IS_PCONST_NULL (*sp)) {
10072                                         EMIT_NEW_PCONST (cfg, res, NULL);
10073                                         res->type = STACK_OBJ;
10074                                 } else {
10075                                         MONO_INST_NEW (cfg, res, OP_CASTCLASS);
10076                                         res->dreg = alloc_preg (cfg);
10077                                         res->sreg1 = (*sp)->dreg;
10078                                         res->klass = klass;
10079                                         res->type = STACK_OBJ;
10080                                         MONO_ADD_INS (cfg->cbb, res);
10081                                         cfg->flags |= MONO_CFG_HAS_TYPE_CHECK;
10082                                 }
10083                         } else if (mono_class_is_nullable (klass)) {
10084                                 res = handle_unbox_nullable (cfg, *sp, klass, context_used);
10085                         } else {
10086                                 addr = handle_unbox (cfg, klass, sp, context_used);
10087                                 /* LDOBJ */
10088                                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, addr->dreg, 0);
10089                                 res = ins;
10090                                 inline_costs += 2;
10091                         }
10092
10093                         *sp ++ = res;
10094                         ip += 5;
10095                         break;
10096                 }
10097                 case CEE_BOX: {
10098                         MonoInst *val;
10099                         MonoClass *enum_class;
10100                         MonoMethod *has_flag;
10101
10102                         CHECK_STACK (1);
10103                         --sp;
10104                         val = *sp;
10105                         CHECK_OPSIZE (5);
10106                         token = read32 (ip + 1);
10107                         klass = mini_get_class (method, token, generic_context);
10108                         CHECK_TYPELOAD (klass);
10109
10110                         mono_save_token_info (cfg, image, token, klass);
10111
10112                         context_used = mini_class_check_context_used (cfg, klass);
10113
10114                         if (generic_class_is_reference_type (cfg, klass)) {
10115                                 *sp++ = val;
10116                                 ip += 5;
10117                                 break;
10118                         }
10119
10120                         if (klass == mono_defaults.void_class)
10121                                 UNVERIFIED;
10122                         if (target_type_is_incompatible (cfg, &klass->byval_arg, *sp))
10123                                 UNVERIFIED;
10124                         /* frequent check in generic code: box (struct), brtrue */
10125
10126                         /*
10127                          * Look for:
10128                          *
10129                          *   <push int/long ptr>
10130                          *   <push int/long>
10131                          *   box MyFlags
10132                          *   constrained. MyFlags
10133                          *   callvirt instace bool class [mscorlib] System.Enum::HasFlag (class [mscorlib] System.Enum)
10134                          *
10135                          * If we find this sequence and the operand types on box and constrained
10136                          * are equal, we can emit a specialized instruction sequence instead of
10137                          * the very slow HasFlag () call.
10138                          */
10139                         if ((cfg->opt & MONO_OPT_INTRINS) &&
10140                             /* Cheap checks first. */
10141                             ip + 5 + 6 + 5 < end &&
10142                             ip [5] == CEE_PREFIX1 &&
10143                             ip [6] == CEE_CONSTRAINED_ &&
10144                             ip [11] == CEE_CALLVIRT &&
10145                             ip_in_bb (cfg, cfg->cbb, ip + 5 + 6 + 5) &&
10146                             mono_class_is_enum (klass) &&
10147                             (enum_class = mini_get_class (method, read32 (ip + 7), generic_context)) &&
10148                             (has_flag = mini_get_method (cfg, method, read32 (ip + 12), NULL, generic_context)) &&
10149                             has_flag->klass == mono_defaults.enum_class &&
10150                             !strcmp (has_flag->name, "HasFlag") &&
10151                             has_flag->signature->hasthis &&
10152                             has_flag->signature->param_count == 1) {
10153                                 CHECK_TYPELOAD (enum_class);
10154
10155                                 if (enum_class == klass) {
10156                                         MonoInst *enum_this, *enum_flag;
10157
10158                                         ip += 5 + 6 + 5;
10159                                         --sp;
10160
10161                                         enum_this = sp [0];
10162                                         enum_flag = sp [1];
10163
10164                                         *sp++ = handle_enum_has_flag (cfg, klass, enum_this, enum_flag);
10165                                         break;
10166                                 }
10167                         }
10168
10169                         // FIXME: LLVM can't handle the inconsistent bb linking
10170                         if (!mono_class_is_nullable (klass) &&
10171                                 !mini_is_gsharedvt_klass (klass) &&
10172                                 ip + 5 < end && ip_in_bb (cfg, cfg->cbb, ip + 5) &&
10173                                 (ip [5] == CEE_BRTRUE ||
10174                                  ip [5] == CEE_BRTRUE_S ||
10175                                  ip [5] == CEE_BRFALSE ||
10176                                  ip [5] == CEE_BRFALSE_S)) {
10177                                 gboolean is_true = ip [5] == CEE_BRTRUE || ip [5] == CEE_BRTRUE_S;
10178                                 int dreg;
10179                                 MonoBasicBlock *true_bb, *false_bb;
10180
10181                                 ip += 5;
10182
10183                                 if (cfg->verbose_level > 3) {
10184                                         printf ("converting (in B%d: stack: %d) %s", cfg->cbb->block_num, (int)(sp - stack_start), mono_disasm_code_one (NULL, method, ip, NULL));
10185                                         printf ("<box+brtrue opt>\n");
10186                                 }
10187
10188                                 switch (*ip) {
10189                                 case CEE_BRTRUE_S:
10190                                 case CEE_BRFALSE_S:
10191                                         CHECK_OPSIZE (2);
10192                                         ip++;
10193                                         target = ip + 1 + (signed char)(*ip);
10194                                         ip++;
10195                                         break;
10196                                 case CEE_BRTRUE:
10197                                 case CEE_BRFALSE:
10198                                         CHECK_OPSIZE (5);
10199                                         ip++;
10200                                         target = ip + 4 + (gint)(read32 (ip));
10201                                         ip += 4;
10202                                         break;
10203                                 default:
10204                                         g_assert_not_reached ();
10205                                 }
10206
10207                                 /*
10208                                  * We need to link both bblocks, since it is needed for handling stack
10209                                  * arguments correctly (See test_0_box_brtrue_opt_regress_81102).
10210                                  * Branching to only one of them would lead to inconsistencies, so
10211                                  * generate an ICONST+BRTRUE, the branch opts will get rid of them.
10212                                  */
10213                                 GET_BBLOCK (cfg, true_bb, target);
10214                                 GET_BBLOCK (cfg, false_bb, ip);
10215
10216                                 mono_link_bblock (cfg, cfg->cbb, true_bb);
10217                                 mono_link_bblock (cfg, cfg->cbb, false_bb);
10218
10219                                 if (sp != stack_start) {
10220                                         handle_stack_args (cfg, stack_start, sp - stack_start);
10221                                         sp = stack_start;
10222                                         CHECK_UNVERIFIABLE (cfg);
10223                                 }
10224
10225                                 if (COMPILE_LLVM (cfg)) {
10226                                         dreg = alloc_ireg (cfg);
10227                                         MONO_EMIT_NEW_ICONST (cfg, dreg, 0);
10228                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, dreg, is_true ? 0 : 1);
10229
10230                                         MONO_EMIT_NEW_BRANCH_BLOCK2 (cfg, OP_IBEQ, true_bb, false_bb);
10231                                 } else {
10232                                         /* The JIT can't eliminate the iconst+compare */
10233                                         MONO_INST_NEW (cfg, ins, OP_BR);
10234                                         ins->inst_target_bb = is_true ? true_bb : false_bb;
10235                                         MONO_ADD_INS (cfg->cbb, ins);
10236                                 }
10237
10238                                 start_new_bblock = 1;
10239                                 break;
10240                         }
10241
10242                         *sp++ = handle_box (cfg, val, klass, context_used);
10243
10244                         CHECK_CFG_EXCEPTION;
10245                         ip += 5;
10246                         inline_costs += 1;
10247                         break;
10248                 }
10249                 case CEE_UNBOX: {
10250                         CHECK_STACK (1);
10251                         --sp;
10252                         CHECK_OPSIZE (5);
10253                         token = read32 (ip + 1);
10254                         klass = mini_get_class (method, token, generic_context);
10255                         CHECK_TYPELOAD (klass);
10256
10257                         mono_save_token_info (cfg, image, token, klass);
10258
10259                         context_used = mini_class_check_context_used (cfg, klass);
10260
10261                         if (mono_class_is_nullable (klass)) {
10262                                 MonoInst *val;
10263
10264                                 val = handle_unbox_nullable (cfg, *sp, klass, context_used);
10265                                 EMIT_NEW_VARLOADA (cfg, ins, get_vreg_to_inst (cfg, val->dreg), &val->klass->byval_arg);
10266
10267                                 *sp++= ins;
10268                         } else {
10269                                 ins = handle_unbox (cfg, klass, sp, context_used);
10270                                 *sp++ = ins;
10271                         }
10272                         ip += 5;
10273                         inline_costs += 2;
10274                         break;
10275                 }
10276                 case CEE_LDFLD:
10277                 case CEE_LDFLDA:
10278                 case CEE_STFLD:
10279                 case CEE_LDSFLD:
10280                 case CEE_LDSFLDA:
10281                 case CEE_STSFLD: {
10282                         MonoClassField *field;
10283 #ifndef DISABLE_REMOTING
10284                         int costs;
10285 #endif
10286                         guint foffset;
10287                         gboolean is_instance;
10288                         int op;
10289                         gpointer addr = NULL;
10290                         gboolean is_special_static;
10291                         MonoType *ftype;
10292                         MonoInst *store_val = NULL;
10293                         MonoInst *thread_ins;
10294
10295                         op = *ip;
10296                         is_instance = (op == CEE_LDFLD || op == CEE_LDFLDA || op == CEE_STFLD);
10297                         if (is_instance) {
10298                                 if (op == CEE_STFLD) {
10299                                         CHECK_STACK (2);
10300                                         sp -= 2;
10301                                         store_val = sp [1];
10302                                 } else {
10303                                         CHECK_STACK (1);
10304                                         --sp;
10305                                 }
10306                                 if (sp [0]->type == STACK_I4 || sp [0]->type == STACK_I8 || sp [0]->type == STACK_R8)
10307                                         UNVERIFIED;
10308                                 if (*ip != CEE_LDFLD && sp [0]->type == STACK_VTYPE)
10309                                         UNVERIFIED;
10310                         } else {
10311                                 if (op == CEE_STSFLD) {
10312                                         CHECK_STACK (1);
10313                                         sp--;
10314                                         store_val = sp [0];
10315                                 }
10316                         }
10317
10318                         CHECK_OPSIZE (5);
10319                         token = read32 (ip + 1);
10320                         if (method->wrapper_type != MONO_WRAPPER_NONE) {
10321                                 field = (MonoClassField *)mono_method_get_wrapper_data (method, token);
10322                                 klass = field->parent;
10323                         }
10324                         else {
10325                                 field = mono_field_from_token_checked (image, token, &klass, generic_context, &cfg->error);
10326                                 CHECK_CFG_ERROR;
10327                         }
10328                         if (!dont_verify && !cfg->skip_visibility && !mono_method_can_access_field (method, field))
10329                                 FIELD_ACCESS_FAILURE (method, field);
10330                         mono_class_init (klass);
10331
10332                         /* if the class is Critical then transparent code cannot access it's fields */
10333                         if (!is_instance && mono_security_core_clr_enabled ())
10334                                 ensure_method_is_allowed_to_access_field (cfg, method, field);
10335
10336                         /* XXX this is technically required but, so far (SL2), no [SecurityCritical] types (not many exists) have
10337                            any visible *instance* field  (in fact there's a single case for a static field in Marshal) XXX
10338                         if (mono_security_core_clr_enabled ())
10339                                 ensure_method_is_allowed_to_access_field (cfg, method, field);
10340                         */
10341
10342                         ftype = mono_field_get_type (field);
10343
10344                         /*
10345                          * LDFLD etc. is usable on static fields as well, so convert those cases to
10346                          * the static case.
10347                          */
10348                         if (is_instance && ftype->attrs & FIELD_ATTRIBUTE_STATIC) {
10349                                 switch (op) {
10350                                 case CEE_LDFLD:
10351                                         op = CEE_LDSFLD;
10352                                         break;
10353                                 case CEE_STFLD:
10354                                         op = CEE_STSFLD;
10355                                         break;
10356                                 case CEE_LDFLDA:
10357                                         op = CEE_LDSFLDA;
10358                                         break;
10359                                 default:
10360                                         g_assert_not_reached ();
10361                                 }
10362                                 is_instance = FALSE;
10363                         }
10364
10365                         context_used = mini_class_check_context_used (cfg, klass);
10366
10367                         /* INSTANCE CASE */
10368
10369                         foffset = klass->valuetype? field->offset - sizeof (MonoObject): field->offset;
10370                         if (op == CEE_STFLD) {
10371                                 if (target_type_is_incompatible (cfg, field->type, sp [1]))
10372                                         UNVERIFIED;
10373 #ifndef DISABLE_REMOTING
10374                                 if ((mono_class_is_marshalbyref (klass) && !MONO_CHECK_THIS (sp [0])) || mono_class_is_contextbound (klass) || klass == mono_defaults.marshalbyrefobject_class) {
10375                                         MonoMethod *stfld_wrapper = mono_marshal_get_stfld_wrapper (field->type);
10376                                         MonoInst *iargs [5];
10377
10378                                         GSHAREDVT_FAILURE (op);
10379
10380                                         iargs [0] = sp [0];
10381                                         EMIT_NEW_CLASSCONST (cfg, iargs [1], klass);
10382                                         EMIT_NEW_FIELDCONST (cfg, iargs [2], field);
10383                                         EMIT_NEW_ICONST (cfg, iargs [3], klass->valuetype ? field->offset - sizeof (MonoObject) :
10384                                                     field->offset);
10385                                         iargs [4] = sp [1];
10386
10387                                         if (cfg->opt & MONO_OPT_INLINE || cfg->compile_aot) {
10388                                                 costs = inline_method (cfg, stfld_wrapper, mono_method_signature (stfld_wrapper),
10389                                                                                            iargs, ip, cfg->real_offset, TRUE);
10390                                                 CHECK_CFG_EXCEPTION;
10391                                                 g_assert (costs > 0);
10392
10393                                                 cfg->real_offset += 5;
10394
10395                                                 inline_costs += costs;
10396                                         } else {
10397                                                 mono_emit_method_call (cfg, stfld_wrapper, iargs, NULL);
10398                                         }
10399                                 } else
10400 #endif
10401                                 {
10402                                         MonoInst *store, *wbarrier_ptr_ins = NULL;
10403
10404                                         MONO_EMIT_NULL_CHECK (cfg, sp [0]->dreg);
10405
10406                                         if (ins_flag & MONO_INST_VOLATILE) {
10407                                                 /* Volatile stores have release semantics, see 12.6.7 in Ecma 335 */
10408                                                 mini_emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_REL);
10409                                         }
10410
10411                                         if (mini_is_gsharedvt_klass (klass)) {
10412                                                 MonoInst *offset_ins;
10413
10414                                                 context_used = mini_class_check_context_used (cfg, klass);
10415
10416                                                 offset_ins = emit_get_gsharedvt_info (cfg, field, MONO_RGCTX_INFO_FIELD_OFFSET);
10417                                                 /* The value is offset by 1 */
10418                                                 EMIT_NEW_BIALU_IMM (cfg, ins, OP_PSUB_IMM, offset_ins->dreg, offset_ins->dreg, 1);
10419                                                 dreg = alloc_ireg_mp (cfg);
10420                                                 EMIT_NEW_BIALU (cfg, ins, OP_PADD, dreg, sp [0]->dreg, offset_ins->dreg);
10421                                                 wbarrier_ptr_ins = ins;
10422                                                 /* The decomposition will call mini_emit_memory_copy () which will emit a wbarrier if needed */
10423                                                 EMIT_NEW_STORE_MEMBASE_TYPE (cfg, store, field->type, dreg, 0, sp [1]->dreg);
10424                                         } else {
10425                                                 EMIT_NEW_STORE_MEMBASE_TYPE (cfg, store, field->type, sp [0]->dreg, foffset, sp [1]->dreg);
10426                                         }
10427                                         if (sp [0]->opcode != OP_LDADDR)
10428                                                 store->flags |= MONO_INST_FAULT;
10429
10430                                         if (cfg->gen_write_barriers && mini_type_to_stind (cfg, field->type) == CEE_STIND_REF && !MONO_INS_IS_PCONST_NULL (sp [1])) {
10431                                                 if (mini_is_gsharedvt_klass (klass)) {
10432                                                         g_assert (wbarrier_ptr_ins);
10433                                                         mini_emit_write_barrier (cfg, wbarrier_ptr_ins, sp [1]);
10434                                                 } else {
10435                                                         /* insert call to write barrier */
10436                                                         MonoInst *ptr;
10437                                                         int dreg;
10438
10439                                                         dreg = alloc_ireg_mp (cfg);
10440                                                         EMIT_NEW_BIALU_IMM (cfg, ptr, OP_PADD_IMM, dreg, sp [0]->dreg, foffset);
10441                                                         mini_emit_write_barrier (cfg, ptr, sp [1]);
10442                                                 }
10443                                         }
10444
10445                                         store->flags |= ins_flag;
10446                                 }
10447                                 ins_flag = 0;
10448                                 ip += 5;
10449                                 break;
10450                         }
10451
10452 #ifndef DISABLE_REMOTING
10453                         if (is_instance && ((mono_class_is_marshalbyref (klass) && !MONO_CHECK_THIS (sp [0])) || mono_class_is_contextbound (klass) || klass == mono_defaults.marshalbyrefobject_class)) {
10454                                 MonoMethod *wrapper = (op == CEE_LDFLDA) ? mono_marshal_get_ldflda_wrapper (field->type) : mono_marshal_get_ldfld_wrapper (field->type);
10455                                 MonoInst *iargs [4];
10456
10457                                 GSHAREDVT_FAILURE (op);
10458
10459                                 iargs [0] = sp [0];
10460                                 EMIT_NEW_CLASSCONST (cfg, iargs [1], klass);
10461                                 EMIT_NEW_FIELDCONST (cfg, iargs [2], field);
10462                                 EMIT_NEW_ICONST (cfg, iargs [3], klass->valuetype ? field->offset - sizeof (MonoObject) : field->offset);
10463                                 if (cfg->opt & MONO_OPT_INLINE || cfg->compile_aot) {
10464                                         costs = inline_method (cfg, wrapper, mono_method_signature (wrapper),
10465                                                                                    iargs, ip, cfg->real_offset, TRUE);
10466                                         CHECK_CFG_EXCEPTION;
10467                                         g_assert (costs > 0);
10468
10469                                         cfg->real_offset += 5;
10470
10471                                         *sp++ = iargs [0];
10472
10473                                         inline_costs += costs;
10474                                 } else {
10475                                         ins = mono_emit_method_call (cfg, wrapper, iargs, NULL);
10476                                         *sp++ = ins;
10477                                 }
10478                         } else
10479 #endif
10480                         if (is_instance) {
10481                                 if (sp [0]->type == STACK_VTYPE) {
10482                                         MonoInst *var;
10483
10484                                         /* Have to compute the address of the variable */
10485
10486                                         var = get_vreg_to_inst (cfg, sp [0]->dreg);
10487                                         if (!var)
10488                                                 var = mono_compile_create_var_for_vreg (cfg, &klass->byval_arg, OP_LOCAL, sp [0]->dreg);
10489                                         else
10490                                                 g_assert (var->klass == klass);
10491
10492                                         EMIT_NEW_VARLOADA (cfg, ins, var, &var->klass->byval_arg);
10493                                         sp [0] = ins;
10494                                 }
10495
10496                                 if (op == CEE_LDFLDA) {
10497                                         if (sp [0]->type == STACK_OBJ) {
10498                                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, sp [0]->dreg, 0);
10499                                                 MONO_EMIT_NEW_COND_EXC (cfg, EQ, "NullReferenceException");
10500                                         }
10501
10502                                         dreg = alloc_ireg_mp (cfg);
10503
10504                                         if (mini_is_gsharedvt_klass (klass)) {
10505                                                 MonoInst *offset_ins;
10506
10507                                                 offset_ins = emit_get_gsharedvt_info (cfg, field, MONO_RGCTX_INFO_FIELD_OFFSET);
10508                                                 /* The value is offset by 1 */
10509                                                 EMIT_NEW_BIALU_IMM (cfg, ins, OP_PSUB_IMM, offset_ins->dreg, offset_ins->dreg, 1);
10510                                                 EMIT_NEW_BIALU (cfg, ins, OP_PADD, dreg, sp [0]->dreg, offset_ins->dreg);
10511                                         } else {
10512                                                 EMIT_NEW_BIALU_IMM (cfg, ins, OP_PADD_IMM, dreg, sp [0]->dreg, foffset);
10513                                         }
10514                                         ins->klass = mono_class_from_mono_type (field->type);
10515                                         ins->type = STACK_MP;
10516                                         *sp++ = ins;
10517                                 } else {
10518                                         MonoInst *load;
10519
10520                                         MONO_EMIT_NULL_CHECK (cfg, sp [0]->dreg);
10521
10522                                         if (sp [0]->opcode == OP_LDADDR && klass->simd_type && cfg->opt & MONO_OPT_SIMD) {
10523                                                 ins = mono_emit_simd_field_load (cfg, field, sp [0]);
10524                                                 if (ins) {
10525                                                         *sp++ = ins;
10526                                                         ins_flag = 0;
10527                                                         ip += 5;
10528                                                         break;
10529                                                 }
10530                                         }
10531
10532                                         MonoInst *field_add_inst = sp [0];
10533                                         if (mini_is_gsharedvt_klass (klass)) {
10534                                                 MonoInst *offset_ins;
10535
10536                                                 offset_ins = emit_get_gsharedvt_info (cfg, field, MONO_RGCTX_INFO_FIELD_OFFSET);
10537                                                 /* The value is offset by 1 */
10538                                                 EMIT_NEW_BIALU_IMM (cfg, ins, OP_PSUB_IMM, offset_ins->dreg, offset_ins->dreg, 1);
10539                                                 EMIT_NEW_BIALU (cfg, field_add_inst, OP_PADD, alloc_ireg_mp (cfg), sp [0]->dreg, offset_ins->dreg);
10540                                                 foffset = 0;
10541                                         }
10542
10543                                         load = mini_emit_memory_load (cfg, field->type, field_add_inst, foffset, ins_flag);
10544
10545                                         if (sp [0]->opcode != OP_LDADDR)
10546                                                 load->flags |= MONO_INST_FAULT;
10547                                         *sp++ = load;
10548                                 }
10549                         }
10550
10551                         if (is_instance) {
10552                                 ins_flag = 0;
10553                                 ip += 5;
10554                                 break;
10555                         }
10556
10557                         /* STATIC CASE */
10558                         context_used = mini_class_check_context_used (cfg, klass);
10559
10560                         if (ftype->attrs & FIELD_ATTRIBUTE_LITERAL) {
10561                                 mono_error_set_field_load (&cfg->error, field->parent, field->name, "Using static instructions with literal field");
10562                                 CHECK_CFG_ERROR;
10563                         }
10564
10565                         /* The special_static_fields field is init'd in mono_class_vtable, so it needs
10566                          * to be called here.
10567                          */
10568                         if (!context_used && !(cfg->opt & MONO_OPT_SHARED)) {
10569                                 mono_class_vtable (cfg->domain, klass);
10570                                 CHECK_TYPELOAD (klass);
10571                         }
10572                         mono_domain_lock (cfg->domain);
10573                         if (cfg->domain->special_static_fields)
10574                                 addr = g_hash_table_lookup (cfg->domain->special_static_fields, field);
10575                         mono_domain_unlock (cfg->domain);
10576
10577                         is_special_static = mono_class_field_is_special_static (field);
10578
10579                         if (is_special_static && ((gsize)addr & 0x80000000) == 0)
10580                                 thread_ins = mono_create_tls_get (cfg, TLS_KEY_THREAD);
10581                         else
10582                                 thread_ins = NULL;
10583
10584                         /* Generate IR to compute the field address */
10585                         if (is_special_static && ((gsize)addr & 0x80000000) == 0 && thread_ins && !(cfg->opt & MONO_OPT_SHARED) && !context_used) {
10586                                 /*
10587                                  * Fast access to TLS data
10588                                  * Inline version of get_thread_static_data () in
10589                                  * threads.c.
10590                                  */
10591                                 guint32 offset;
10592                                 int idx, static_data_reg, array_reg, dreg;
10593
10594                                 if (context_used && cfg->gsharedvt && mini_is_gsharedvt_klass (klass))
10595                                         GSHAREDVT_FAILURE (op);
10596
10597                                 static_data_reg = alloc_ireg (cfg);
10598                                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, static_data_reg, thread_ins->dreg, MONO_STRUCT_OFFSET (MonoInternalThread, static_data));
10599
10600                                 if (cfg->compile_aot) {
10601                                         int offset_reg, offset2_reg, idx_reg;
10602
10603                                         /* For TLS variables, this will return the TLS offset */
10604                                         EMIT_NEW_SFLDACONST (cfg, ins, field);
10605                                         offset_reg = ins->dreg;
10606                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_IAND_IMM, offset_reg, offset_reg, 0x7fffffff);
10607                                         idx_reg = alloc_ireg (cfg);
10608                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_IAND_IMM, idx_reg, offset_reg, 0x3f);
10609                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_ISHL_IMM, idx_reg, idx_reg, sizeof (gpointer) == 8 ? 3 : 2);
10610                                         MONO_EMIT_NEW_BIALU (cfg, OP_PADD, static_data_reg, static_data_reg, idx_reg);
10611                                         array_reg = alloc_ireg (cfg);
10612                                         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, array_reg, static_data_reg, 0);
10613                                         offset2_reg = alloc_ireg (cfg);
10614                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_ISHR_UN_IMM, offset2_reg, offset_reg, 6);
10615                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_IAND_IMM, offset2_reg, offset2_reg, 0x1ffffff);
10616                                         dreg = alloc_ireg (cfg);
10617                                         EMIT_NEW_BIALU (cfg, ins, OP_PADD, dreg, array_reg, offset2_reg);
10618                                 } else {
10619                                         offset = (gsize)addr & 0x7fffffff;
10620                                         idx = offset & 0x3f;
10621
10622                                         array_reg = alloc_ireg (cfg);
10623                                         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, array_reg, static_data_reg, idx * sizeof (gpointer));
10624                                         dreg = alloc_ireg (cfg);
10625                                         EMIT_NEW_BIALU_IMM (cfg, ins, OP_ADD_IMM, dreg, array_reg, ((offset >> 6) & 0x1ffffff));
10626                                 }
10627                         } else if ((cfg->opt & MONO_OPT_SHARED) ||
10628                                         (cfg->compile_aot && is_special_static) ||
10629                                         (context_used && is_special_static)) {
10630                                 MonoInst *iargs [2];
10631
10632                                 g_assert (field->parent);
10633                                 EMIT_NEW_DOMAINCONST (cfg, iargs [0]);
10634                                 if (context_used) {
10635                                         iargs [1] = emit_get_rgctx_field (cfg, context_used,
10636                                                 field, MONO_RGCTX_INFO_CLASS_FIELD);
10637                                 } else {
10638                                         EMIT_NEW_FIELDCONST (cfg, iargs [1], field);
10639                                 }
10640                                 ins = mono_emit_jit_icall (cfg, mono_class_static_field_address, iargs);
10641                         } else if (context_used) {
10642                                 MonoInst *static_data;
10643
10644                                 /*
10645                                 g_print ("sharing static field access in %s.%s.%s - depth %d offset %d\n",
10646                                         method->klass->name_space, method->klass->name, method->name,
10647                                         depth, field->offset);
10648                                 */
10649
10650                                 if (mono_class_needs_cctor_run (klass, method))
10651                                         emit_class_init (cfg, klass);
10652
10653                                 /*
10654                                  * The pointer we're computing here is
10655                                  *
10656                                  *   super_info.static_data + field->offset
10657                                  */
10658                                 static_data = mini_emit_get_rgctx_klass (cfg, context_used,
10659                                         klass, MONO_RGCTX_INFO_STATIC_DATA);
10660
10661                                 if (mini_is_gsharedvt_klass (klass)) {
10662                                         MonoInst *offset_ins;
10663
10664                                         offset_ins = emit_get_rgctx_field (cfg, context_used, field, MONO_RGCTX_INFO_FIELD_OFFSET);
10665                                         /* The value is offset by 1 */
10666                                         EMIT_NEW_BIALU_IMM (cfg, ins, OP_PSUB_IMM, offset_ins->dreg, offset_ins->dreg, 1);
10667                                         dreg = alloc_ireg_mp (cfg);
10668                                         EMIT_NEW_BIALU (cfg, ins, OP_PADD, dreg, static_data->dreg, offset_ins->dreg);
10669                                 } else if (field->offset == 0) {
10670                                         ins = static_data;
10671                                 } else {
10672                                         int addr_reg = mono_alloc_preg (cfg);
10673                                         EMIT_NEW_BIALU_IMM (cfg, ins, OP_PADD_IMM, addr_reg, static_data->dreg, field->offset);
10674                                 }
10675                         } else if ((cfg->opt & MONO_OPT_SHARED) || (cfg->compile_aot && addr)) {
10676                                 MonoInst *iargs [2];
10677
10678                                 g_assert (field->parent);
10679                                 EMIT_NEW_DOMAINCONST (cfg, iargs [0]);
10680                                 EMIT_NEW_FIELDCONST (cfg, iargs [1], field);
10681                                 ins = mono_emit_jit_icall (cfg, mono_class_static_field_address, iargs);
10682                         } else {
10683                                 MonoVTable *vtable = NULL;
10684
10685                                 if (!cfg->compile_aot)
10686                                         vtable = mono_class_vtable (cfg->domain, klass);
10687                                 CHECK_TYPELOAD (klass);
10688
10689                                 if (!addr) {
10690                                         if (mini_field_access_needs_cctor_run (cfg, method, klass, vtable)) {
10691                                                 if (!(g_slist_find (class_inits, klass))) {
10692                                                         emit_class_init (cfg, klass);
10693                                                         if (cfg->verbose_level > 2)
10694                                                                 printf ("class %s.%s needs init call for %s\n", klass->name_space, klass->name, mono_field_get_name (field));
10695                                                         class_inits = g_slist_prepend (class_inits, klass);
10696                                                 }
10697                                         } else {
10698                                                 if (cfg->run_cctors) {
10699                                                         /* This makes so that inline cannot trigger */
10700                                                         /* .cctors: too many apps depend on them */
10701                                                         /* running with a specific order... */
10702                                                         g_assert (vtable);
10703                                                         if (! vtable->initialized)
10704                                                                 INLINE_FAILURE ("class init");
10705                                                         if (!mono_runtime_class_init_full (vtable, &cfg->error)) {
10706                                                                 mono_cfg_set_exception (cfg, MONO_EXCEPTION_MONO_ERROR);
10707                                                                 goto exception_exit;
10708                                                         }
10709                                                 }
10710                                         }
10711                                         if (cfg->compile_aot)
10712                                                 EMIT_NEW_SFLDACONST (cfg, ins, field);
10713                                         else {
10714                                                 g_assert (vtable);
10715                                                 addr = (char*)mono_vtable_get_static_field_data (vtable) + field->offset;
10716                                                 g_assert (addr);
10717                                                 EMIT_NEW_PCONST (cfg, ins, addr);
10718                                         }
10719                                 } else {
10720                                         MonoInst *iargs [1];
10721                                         EMIT_NEW_ICONST (cfg, iargs [0], GPOINTER_TO_UINT (addr));
10722                                         ins = mono_emit_jit_icall (cfg, mono_get_special_static_data, iargs);
10723                                 }
10724                         }
10725
10726                         /* Generate IR to do the actual load/store operation */
10727
10728                         if ((op == CEE_STFLD || op == CEE_STSFLD) && (ins_flag & MONO_INST_VOLATILE)) {
10729                                 /* Volatile stores have release semantics, see 12.6.7 in Ecma 335 */
10730                                 mini_emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_REL);
10731                         }
10732
10733                         if (op == CEE_LDSFLDA) {
10734                                 ins->klass = mono_class_from_mono_type (ftype);
10735                                 ins->type = STACK_PTR;
10736                                 *sp++ = ins;
10737                         } else if (op == CEE_STSFLD) {
10738                                 MonoInst *store;
10739
10740                                 EMIT_NEW_STORE_MEMBASE_TYPE (cfg, store, ftype, ins->dreg, 0, store_val->dreg);
10741                                 store->flags |= ins_flag;
10742                         } else {
10743                                 gboolean is_const = FALSE;
10744                                 MonoVTable *vtable = NULL;
10745                                 gpointer addr = NULL;
10746
10747                                 if (!context_used) {
10748                                         vtable = mono_class_vtable (cfg->domain, klass);
10749                                         CHECK_TYPELOAD (klass);
10750                                 }
10751                                 if ((ftype->attrs & FIELD_ATTRIBUTE_INIT_ONLY) && (((addr = mono_aot_readonly_field_override (field)) != NULL) ||
10752                                                 (!context_used && !((cfg->opt & MONO_OPT_SHARED) || cfg->compile_aot) && vtable->initialized))) {
10753                                         int ro_type = ftype->type;
10754                                         if (!addr)
10755                                                 addr = (char*)mono_vtable_get_static_field_data (vtable) + field->offset;
10756                                         if (ro_type == MONO_TYPE_VALUETYPE && ftype->data.klass->enumtype) {
10757                                                 ro_type = mono_class_enum_basetype (ftype->data.klass)->type;
10758                                         }
10759
10760                                         GSHAREDVT_FAILURE (op);
10761
10762                                         /* printf ("RO-FIELD %s.%s:%s\n", klass->name_space, klass->name, mono_field_get_name (field));*/
10763                                         is_const = TRUE;
10764                                         switch (ro_type) {
10765                                         case MONO_TYPE_BOOLEAN:
10766                                         case MONO_TYPE_U1:
10767                                                 EMIT_NEW_ICONST (cfg, *sp, *((guint8 *)addr));
10768                                                 sp++;
10769                                                 break;
10770                                         case MONO_TYPE_I1:
10771                                                 EMIT_NEW_ICONST (cfg, *sp, *((gint8 *)addr));
10772                                                 sp++;
10773                                                 break;
10774                                         case MONO_TYPE_CHAR:
10775                                         case MONO_TYPE_U2:
10776                                                 EMIT_NEW_ICONST (cfg, *sp, *((guint16 *)addr));
10777                                                 sp++;
10778                                                 break;
10779                                         case MONO_TYPE_I2:
10780                                                 EMIT_NEW_ICONST (cfg, *sp, *((gint16 *)addr));
10781                                                 sp++;
10782                                                 break;
10783                                                 break;
10784                                         case MONO_TYPE_I4:
10785                                                 EMIT_NEW_ICONST (cfg, *sp, *((gint32 *)addr));
10786                                                 sp++;
10787                                                 break;
10788                                         case MONO_TYPE_U4:
10789                                                 EMIT_NEW_ICONST (cfg, *sp, *((guint32 *)addr));
10790                                                 sp++;
10791                                                 break;
10792                                         case MONO_TYPE_I:
10793                                         case MONO_TYPE_U:
10794                                         case MONO_TYPE_PTR:
10795                                         case MONO_TYPE_FNPTR:
10796                                                 EMIT_NEW_PCONST (cfg, *sp, *((gpointer *)addr));
10797                                                 type_to_eval_stack_type ((cfg), field->type, *sp);
10798                                                 sp++;
10799                                                 break;
10800                                         case MONO_TYPE_STRING:
10801                                         case MONO_TYPE_OBJECT:
10802                                         case MONO_TYPE_CLASS:
10803                                         case MONO_TYPE_SZARRAY:
10804                                         case MONO_TYPE_ARRAY:
10805                                                 if (!mono_gc_is_moving ()) {
10806                                                         EMIT_NEW_PCONST (cfg, *sp, *((gpointer *)addr));
10807                                                         type_to_eval_stack_type ((cfg), field->type, *sp);
10808                                                         sp++;
10809                                                 } else {
10810                                                         is_const = FALSE;
10811                                                 }
10812                                                 break;
10813                                         case MONO_TYPE_I8:
10814                                         case MONO_TYPE_U8:
10815                                                 EMIT_NEW_I8CONST (cfg, *sp, *((gint64 *)addr));
10816                                                 sp++;
10817                                                 break;
10818                                         case MONO_TYPE_R4:
10819                                         case MONO_TYPE_R8:
10820                                         case MONO_TYPE_VALUETYPE:
10821                                         default:
10822                                                 is_const = FALSE;
10823                                                 break;
10824                                         }
10825                                 }
10826
10827                                 if (!is_const) {
10828                                         MonoInst *load;
10829
10830                                         CHECK_STACK_OVF (1);
10831
10832                                         EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, load, field->type, ins->dreg, 0);
10833                                         load->flags |= ins_flag;
10834                                         ins_flag = 0;
10835                                         *sp++ = load;
10836                                 }
10837                         }
10838
10839                         if ((op == CEE_LDFLD || op == CEE_LDSFLD) && (ins_flag & MONO_INST_VOLATILE)) {
10840                                 /* Volatile loads have acquire semantics, see 12.6.7 in Ecma 335 */
10841                                 mini_emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_ACQ);
10842                         }
10843
10844                         ins_flag = 0;
10845                         ip += 5;
10846                         break;
10847                 }
10848                 case CEE_STOBJ:
10849                         CHECK_STACK (2);
10850                         sp -= 2;
10851                         CHECK_OPSIZE (5);
10852                         token = read32 (ip + 1);
10853                         klass = mini_get_class (method, token, generic_context);
10854                         CHECK_TYPELOAD (klass);
10855
10856                         /* FIXME: should check item at sp [1] is compatible with the type of the store. */
10857                         mini_emit_memory_store (cfg, &klass->byval_arg, sp [0], sp [1], ins_flag);
10858                         ins_flag = 0;
10859                         ip += 5;
10860                         inline_costs += 1;
10861                         break;
10862
10863                         /*
10864                          * Array opcodes
10865                          */
10866                 case CEE_NEWARR: {
10867                         MonoInst *len_ins;
10868                         const char *data_ptr;
10869                         int data_size = 0;
10870                         guint32 field_token;
10871
10872                         CHECK_STACK (1);
10873                         --sp;
10874
10875                         CHECK_OPSIZE (5);
10876                         token = read32 (ip + 1);
10877
10878                         klass = mini_get_class (method, token, generic_context);
10879                         CHECK_TYPELOAD (klass);
10880                         if (klass->byval_arg.type == MONO_TYPE_VOID)
10881                                 UNVERIFIED;
10882
10883                         context_used = mini_class_check_context_used (cfg, klass);
10884
10885                         if (sp [0]->type == STACK_I8 || (SIZEOF_VOID_P == 8 && sp [0]->type == STACK_PTR)) {
10886                                 MONO_INST_NEW (cfg, ins, OP_LCONV_TO_OVF_U4);
10887                                 ins->sreg1 = sp [0]->dreg;
10888                                 ins->type = STACK_I4;
10889                                 ins->dreg = alloc_ireg (cfg);
10890                                 MONO_ADD_INS (cfg->cbb, ins);
10891                                 *sp = mono_decompose_opcode (cfg, ins);
10892                         }
10893
10894                         if (context_used) {
10895                                 MonoInst *args [3];
10896                                 MonoClass *array_class = mono_array_class_get (klass, 1);
10897                                 MonoMethod *managed_alloc = mono_gc_get_managed_array_allocator (array_class);
10898
10899                                 /* FIXME: Use OP_NEWARR and decompose later to help abcrem */
10900
10901                                 /* vtable */
10902                                 args [0] = mini_emit_get_rgctx_klass (cfg, context_used,
10903                                         array_class, MONO_RGCTX_INFO_VTABLE);
10904                                 /* array len */
10905                                 args [1] = sp [0];
10906
10907                                 if (managed_alloc)
10908                                         ins = mono_emit_method_call (cfg, managed_alloc, args, NULL);
10909                                 else
10910                                         ins = mono_emit_jit_icall (cfg, ves_icall_array_new_specific, args);
10911                         } else {
10912                                 if (cfg->opt & MONO_OPT_SHARED) {
10913                                         /* Decompose now to avoid problems with references to the domainvar */
10914                                         MonoInst *iargs [3];
10915
10916                                         EMIT_NEW_DOMAINCONST (cfg, iargs [0]);
10917                                         EMIT_NEW_CLASSCONST (cfg, iargs [1], klass);
10918                                         iargs [2] = sp [0];
10919
10920                                         ins = mono_emit_jit_icall (cfg, ves_icall_array_new, iargs);
10921                                 } else {
10922                                         /* Decompose later since it is needed by abcrem */
10923                                         MonoClass *array_type = mono_array_class_get (klass, 1);
10924                                         mono_class_vtable (cfg->domain, array_type);
10925                                         CHECK_TYPELOAD (array_type);
10926
10927                                         MONO_INST_NEW (cfg, ins, OP_NEWARR);
10928                                         ins->dreg = alloc_ireg_ref (cfg);
10929                                         ins->sreg1 = sp [0]->dreg;
10930                                         ins->inst_newa_class = klass;
10931                                         ins->type = STACK_OBJ;
10932                                         ins->klass = array_type;
10933                                         MONO_ADD_INS (cfg->cbb, ins);
10934                                         cfg->flags |= MONO_CFG_HAS_ARRAY_ACCESS;
10935                                         cfg->cbb->has_array_access = TRUE;
10936
10937                                         /* Needed so mono_emit_load_get_addr () gets called */
10938                                         mono_get_got_var (cfg);
10939                                 }
10940                         }
10941
10942                         len_ins = sp [0];
10943                         ip += 5;
10944                         *sp++ = ins;
10945                         inline_costs += 1;
10946
10947                         /*
10948                          * we inline/optimize the initialization sequence if possible.
10949                          * we should also allocate the array as not cleared, since we spend as much time clearing to 0 as initializing
10950                          * for small sizes open code the memcpy
10951                          * ensure the rva field is big enough
10952                          */
10953                         if ((cfg->opt & MONO_OPT_INTRINS) && ip + 6 < end && ip_in_bb (cfg, cfg->cbb, ip + 6) && (len_ins->opcode == OP_ICONST) && (data_ptr = initialize_array_data (method, cfg->compile_aot, ip, klass, len_ins->inst_c0, &data_size, &field_token))) {
10954                                 MonoMethod *memcpy_method = mini_get_memcpy_method ();
10955                                 MonoInst *iargs [3];
10956                                 int add_reg = alloc_ireg_mp (cfg);
10957
10958                                 EMIT_NEW_BIALU_IMM (cfg, iargs [0], OP_PADD_IMM, add_reg, ins->dreg, MONO_STRUCT_OFFSET (MonoArray, vector));
10959                                 if (cfg->compile_aot) {
10960                                         EMIT_NEW_AOTCONST_TOKEN (cfg, iargs [1], MONO_PATCH_INFO_RVA, method->klass->image, GPOINTER_TO_UINT(field_token), STACK_PTR, NULL);
10961                                 } else {
10962                                         EMIT_NEW_PCONST (cfg, iargs [1], (char*)data_ptr);
10963                                 }
10964                                 EMIT_NEW_ICONST (cfg, iargs [2], data_size);
10965                                 mono_emit_method_call (cfg, memcpy_method, iargs, NULL);
10966                                 ip += 11;
10967                         }
10968
10969                         break;
10970                 }
10971                 case CEE_LDLEN:
10972                         CHECK_STACK (1);
10973                         --sp;
10974                         if (sp [0]->type != STACK_OBJ)
10975                                 UNVERIFIED;
10976
10977                         MONO_INST_NEW (cfg, ins, OP_LDLEN);
10978                         ins->dreg = alloc_preg (cfg);
10979                         ins->sreg1 = sp [0]->dreg;
10980                         ins->type = STACK_I4;
10981                         /* This flag will be inherited by the decomposition */
10982                         ins->flags |= MONO_INST_FAULT;
10983                         MONO_ADD_INS (cfg->cbb, ins);
10984                         cfg->flags |= MONO_CFG_HAS_ARRAY_ACCESS;
10985                         cfg->cbb->has_array_access = TRUE;
10986                         ip ++;
10987                         *sp++ = ins;
10988                         break;
10989                 case CEE_LDELEMA:
10990                         CHECK_STACK (2);
10991                         sp -= 2;
10992                         CHECK_OPSIZE (5);
10993                         if (sp [0]->type != STACK_OBJ)
10994                                 UNVERIFIED;
10995
10996                         cfg->flags |= MONO_CFG_HAS_LDELEMA;
10997
10998                         klass = mini_get_class (method, read32 (ip + 1), generic_context);
10999                         CHECK_TYPELOAD (klass);
11000                         /* we need to make sure that this array is exactly the type it needs
11001                          * to be for correctness. the wrappers are lax with their usage
11002                          * so we need to ignore them here
11003                          */
11004                         if (!klass->valuetype && method->wrapper_type == MONO_WRAPPER_NONE && !readonly) {
11005                                 MonoClass *array_class = mono_array_class_get (klass, 1);
11006                                 mini_emit_check_array_type (cfg, sp [0], array_class);
11007                                 CHECK_TYPELOAD (array_class);
11008                         }
11009
11010                         readonly = FALSE;
11011                         ins = mini_emit_ldelema_1_ins (cfg, klass, sp [0], sp [1], TRUE);
11012                         *sp++ = ins;
11013                         ip += 5;
11014                         break;
11015                 case CEE_LDELEM:
11016                 case CEE_LDELEM_I1:
11017                 case CEE_LDELEM_U1:
11018                 case CEE_LDELEM_I2:
11019                 case CEE_LDELEM_U2:
11020                 case CEE_LDELEM_I4:
11021                 case CEE_LDELEM_U4:
11022                 case CEE_LDELEM_I8:
11023                 case CEE_LDELEM_I:
11024                 case CEE_LDELEM_R4:
11025                 case CEE_LDELEM_R8:
11026                 case CEE_LDELEM_REF: {
11027                         MonoInst *addr;
11028
11029                         CHECK_STACK (2);
11030                         sp -= 2;
11031
11032                         if (*ip == CEE_LDELEM) {
11033                                 CHECK_OPSIZE (5);
11034                                 token = read32 (ip + 1);
11035                                 klass = mini_get_class (method, token, generic_context);
11036                                 CHECK_TYPELOAD (klass);
11037                                 mono_class_init (klass);
11038                         }
11039                         else
11040                                 klass = array_access_to_klass (*ip);
11041
11042                         if (sp [0]->type != STACK_OBJ)
11043                                 UNVERIFIED;
11044
11045                         cfg->flags |= MONO_CFG_HAS_LDELEMA;
11046
11047                         if (mini_is_gsharedvt_variable_klass (klass)) {
11048                                 // FIXME-VT: OP_ICONST optimization
11049                                 addr = mini_emit_ldelema_1_ins (cfg, klass, sp [0], sp [1], TRUE);
11050                                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, addr->dreg, 0);
11051                                 ins->opcode = OP_LOADV_MEMBASE;
11052                         } else if (sp [1]->opcode == OP_ICONST) {
11053                                 int array_reg = sp [0]->dreg;
11054                                 int index_reg = sp [1]->dreg;
11055                                 int offset = (mono_class_array_element_size (klass) * sp [1]->inst_c0) + MONO_STRUCT_OFFSET (MonoArray, vector);
11056
11057                                 if (SIZEOF_REGISTER == 8 && COMPILE_LLVM (cfg))
11058                                         MONO_EMIT_NEW_UNALU (cfg, OP_ZEXT_I4, index_reg, index_reg);
11059
11060                                 MONO_EMIT_BOUNDS_CHECK (cfg, array_reg, MonoArray, max_length, index_reg);
11061                                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, array_reg, offset);
11062                         } else {
11063                                 addr = mini_emit_ldelema_1_ins (cfg, klass, sp [0], sp [1], TRUE);
11064                                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, addr->dreg, 0);
11065                         }
11066                         *sp++ = ins;
11067                         if (*ip == CEE_LDELEM)
11068                                 ip += 5;
11069                         else
11070                                 ++ip;
11071                         break;
11072                 }
11073                 case CEE_STELEM_I:
11074                 case CEE_STELEM_I1:
11075                 case CEE_STELEM_I2:
11076                 case CEE_STELEM_I4:
11077                 case CEE_STELEM_I8:
11078                 case CEE_STELEM_R4:
11079                 case CEE_STELEM_R8:
11080                 case CEE_STELEM_REF:
11081                 case CEE_STELEM: {
11082                         CHECK_STACK (3);
11083                         sp -= 3;
11084
11085                         cfg->flags |= MONO_CFG_HAS_LDELEMA;
11086
11087                         if (*ip == CEE_STELEM) {
11088                                 CHECK_OPSIZE (5);
11089                                 token = read32 (ip + 1);
11090                                 klass = mini_get_class (method, token, generic_context);
11091                                 CHECK_TYPELOAD (klass);
11092                                 mono_class_init (klass);
11093                         }
11094                         else
11095                                 klass = array_access_to_klass (*ip);
11096
11097                         if (sp [0]->type != STACK_OBJ)
11098                                 UNVERIFIED;
11099
11100                         emit_array_store (cfg, klass, sp, TRUE);
11101
11102                         if (*ip == CEE_STELEM)
11103                                 ip += 5;
11104                         else
11105                                 ++ip;
11106                         inline_costs += 1;
11107                         break;
11108                 }
11109                 case CEE_CKFINITE: {
11110                         CHECK_STACK (1);
11111                         --sp;
11112
11113                         if (cfg->llvm_only) {
11114                                 MonoInst *iargs [1];
11115
11116                                 iargs [0] = sp [0];
11117                                 *sp++ = mono_emit_jit_icall (cfg, mono_ckfinite, iargs);
11118                         } else  {
11119                                 MONO_INST_NEW (cfg, ins, OP_CKFINITE);
11120                                 ins->sreg1 = sp [0]->dreg;
11121                                 ins->dreg = alloc_freg (cfg);
11122                                 ins->type = STACK_R8;
11123                                 MONO_ADD_INS (cfg->cbb, ins);
11124
11125                                 *sp++ = mono_decompose_opcode (cfg, ins);
11126                         }
11127
11128                         ++ip;
11129                         break;
11130                 }
11131                 case CEE_REFANYVAL: {
11132                         MonoInst *src_var, *src;
11133
11134                         int klass_reg = alloc_preg (cfg);
11135                         int dreg = alloc_preg (cfg);
11136
11137                         GSHAREDVT_FAILURE (*ip);
11138
11139                         CHECK_STACK (1);
11140                         MONO_INST_NEW (cfg, ins, *ip);
11141                         --sp;
11142                         CHECK_OPSIZE (5);
11143                         klass = mini_get_class (method, read32 (ip + 1), generic_context);
11144                         CHECK_TYPELOAD (klass);
11145
11146                         context_used = mini_class_check_context_used (cfg, klass);
11147
11148                         // FIXME:
11149                         src_var = get_vreg_to_inst (cfg, sp [0]->dreg);
11150                         if (!src_var)
11151                                 src_var = mono_compile_create_var_for_vreg (cfg, &mono_defaults.typed_reference_class->byval_arg, OP_LOCAL, sp [0]->dreg);
11152                         EMIT_NEW_VARLOADA (cfg, src, src_var, src_var->inst_vtype);
11153                         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, klass_reg, src->dreg, MONO_STRUCT_OFFSET (MonoTypedRef, klass));
11154
11155                         if (context_used) {
11156                                 MonoInst *klass_ins;
11157
11158                                 klass_ins = mini_emit_get_rgctx_klass (cfg, context_used,
11159                                                 klass, MONO_RGCTX_INFO_KLASS);
11160
11161                                 // FIXME:
11162                                 MONO_EMIT_NEW_BIALU (cfg, OP_COMPARE, -1, klass_reg, klass_ins->dreg);
11163                                 MONO_EMIT_NEW_COND_EXC (cfg, NE_UN, "InvalidCastException");
11164                         } else {
11165                                 mini_emit_class_check (cfg, klass_reg, klass);
11166                         }
11167                         EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOAD_MEMBASE, dreg, src->dreg, MONO_STRUCT_OFFSET (MonoTypedRef, value));
11168                         ins->type = STACK_MP;
11169                         ins->klass = klass;
11170                         *sp++ = ins;
11171                         ip += 5;
11172                         break;
11173                 }
11174                 case CEE_MKREFANY: {
11175                         MonoInst *loc, *addr;
11176
11177                         GSHAREDVT_FAILURE (*ip);
11178
11179                         CHECK_STACK (1);
11180                         MONO_INST_NEW (cfg, ins, *ip);
11181                         --sp;
11182                         CHECK_OPSIZE (5);
11183                         klass = mini_get_class (method, read32 (ip + 1), generic_context);
11184                         CHECK_TYPELOAD (klass);
11185
11186                         context_used = mini_class_check_context_used (cfg, klass);
11187
11188                         loc = mono_compile_create_var (cfg, &mono_defaults.typed_reference_class->byval_arg, OP_LOCAL);
11189                         EMIT_NEW_TEMPLOADA (cfg, addr, loc->inst_c0);
11190
11191                         if (context_used) {
11192                                 MonoInst *const_ins;
11193                                 int type_reg = alloc_preg (cfg);
11194
11195                                 const_ins = mini_emit_get_rgctx_klass (cfg, context_used, klass, MONO_RGCTX_INFO_KLASS);
11196                                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREP_MEMBASE_REG, addr->dreg, MONO_STRUCT_OFFSET (MonoTypedRef, klass), const_ins->dreg);
11197                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_ADD_IMM, type_reg, const_ins->dreg, MONO_STRUCT_OFFSET (MonoClass, byval_arg));
11198                                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREP_MEMBASE_REG, addr->dreg, MONO_STRUCT_OFFSET (MonoTypedRef, type), type_reg);
11199                         } else {
11200                                 int const_reg = alloc_preg (cfg);
11201                                 int type_reg = alloc_preg (cfg);
11202
11203                                 MONO_EMIT_NEW_CLASSCONST (cfg, const_reg, klass);
11204                                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREP_MEMBASE_REG, addr->dreg, MONO_STRUCT_OFFSET (MonoTypedRef, klass), const_reg);
11205                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_ADD_IMM, type_reg, const_reg, MONO_STRUCT_OFFSET (MonoClass, byval_arg));
11206                                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREP_MEMBASE_REG, addr->dreg, MONO_STRUCT_OFFSET (MonoTypedRef, type), type_reg);
11207                         }
11208                         MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREP_MEMBASE_REG, addr->dreg, MONO_STRUCT_OFFSET (MonoTypedRef, value), sp [0]->dreg);
11209
11210                         EMIT_NEW_TEMPLOAD (cfg, ins, loc->inst_c0);
11211                         ins->type = STACK_VTYPE;
11212                         ins->klass = mono_defaults.typed_reference_class;
11213                         *sp++ = ins;
11214                         ip += 5;
11215                         break;
11216                 }
11217                 case CEE_LDTOKEN: {
11218                         gpointer handle;
11219                         MonoClass *handle_class;
11220
11221                         CHECK_STACK_OVF (1);
11222
11223                         CHECK_OPSIZE (5);
11224                         n = read32 (ip + 1);
11225
11226                         if (method->wrapper_type == MONO_WRAPPER_DYNAMIC_METHOD ||
11227                                         method->wrapper_type == MONO_WRAPPER_SYNCHRONIZED) {
11228                                 handle = mono_method_get_wrapper_data (method, n);
11229                                 handle_class = (MonoClass *)mono_method_get_wrapper_data (method, n + 1);
11230                                 if (handle_class == mono_defaults.typehandle_class)
11231                                         handle = &((MonoClass*)handle)->byval_arg;
11232                         }
11233                         else {
11234                                 handle = mono_ldtoken_checked (image, n, &handle_class, generic_context, &cfg->error);
11235                                 CHECK_CFG_ERROR;
11236                         }
11237                         if (!handle)
11238                                 LOAD_ERROR;
11239                         mono_class_init (handle_class);
11240                         if (cfg->gshared) {
11241                                 if (mono_metadata_token_table (n) == MONO_TABLE_TYPEDEF ||
11242                                                 mono_metadata_token_table (n) == MONO_TABLE_TYPEREF) {
11243                                         /* This case handles ldtoken
11244                                            of an open type, like for
11245                                            typeof(Gen<>). */
11246                                         context_used = 0;
11247                                 } else if (handle_class == mono_defaults.typehandle_class) {
11248                                         context_used = mini_class_check_context_used (cfg, mono_class_from_mono_type ((MonoType *)handle));
11249                                 } else if (handle_class == mono_defaults.fieldhandle_class)
11250                                         context_used = mini_class_check_context_used (cfg, ((MonoClassField*)handle)->parent);
11251                                 else if (handle_class == mono_defaults.methodhandle_class)
11252                                         context_used = mini_method_check_context_used (cfg, (MonoMethod *)handle);
11253                                 else
11254                                         g_assert_not_reached ();
11255                         }
11256
11257                         if ((cfg->opt & MONO_OPT_SHARED) &&
11258                                         method->wrapper_type != MONO_WRAPPER_DYNAMIC_METHOD &&
11259                                         method->wrapper_type != MONO_WRAPPER_SYNCHRONIZED) {
11260                                 MonoInst *addr, *vtvar, *iargs [3];
11261                                 int method_context_used;
11262
11263                                 method_context_used = mini_method_check_context_used (cfg, method);
11264
11265                                 vtvar = mono_compile_create_var (cfg, &handle_class->byval_arg, OP_LOCAL);
11266
11267                                 EMIT_NEW_IMAGECONST (cfg, iargs [0], image);
11268                                 EMIT_NEW_ICONST (cfg, iargs [1], n);
11269                                 if (method_context_used) {
11270                                         iargs [2] = emit_get_rgctx_method (cfg, method_context_used,
11271                                                 method, MONO_RGCTX_INFO_METHOD);
11272                                         ins = mono_emit_jit_icall (cfg, mono_ldtoken_wrapper_generic_shared, iargs);
11273                                 } else {
11274                                         EMIT_NEW_PCONST (cfg, iargs [2], generic_context);
11275                                         ins = mono_emit_jit_icall (cfg, mono_ldtoken_wrapper, iargs);
11276                                 }
11277                                 EMIT_NEW_TEMPLOADA (cfg, addr, vtvar->inst_c0);
11278
11279                                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, addr->dreg, 0, ins->dreg);
11280
11281                                 EMIT_NEW_TEMPLOAD (cfg, ins, vtvar->inst_c0);
11282                         } else {
11283                                 if ((ip + 5 < end) && ip_in_bb (cfg, cfg->cbb, ip + 5) &&
11284                                         ((ip [5] == CEE_CALL) || (ip [5] == CEE_CALLVIRT)) &&
11285                                         (cmethod = mini_get_method (cfg, method, read32 (ip + 6), NULL, generic_context)) &&
11286                                         (cmethod->klass == mono_defaults.systemtype_class) &&
11287                                         (strcmp (cmethod->name, "GetTypeFromHandle") == 0)) {
11288                                         MonoClass *tclass = mono_class_from_mono_type ((MonoType *)handle);
11289
11290                                         mono_class_init (tclass);
11291                                         if (context_used) {
11292                                                 ins = mini_emit_get_rgctx_klass (cfg, context_used,
11293                                                         tclass, MONO_RGCTX_INFO_REFLECTION_TYPE);
11294                                         } else if (cfg->compile_aot) {
11295                                                 if (method->wrapper_type) {
11296                                                         error_init (&error); //got to do it since there are multiple conditionals below
11297                                                         if (mono_class_get_checked (tclass->image, tclass->type_token, &error) == tclass && !generic_context) {
11298                                                                 /* Special case for static synchronized wrappers */
11299                                                                 EMIT_NEW_TYPE_FROM_HANDLE_CONST (cfg, ins, tclass->image, tclass->type_token, generic_context);
11300                                                         } else {
11301                                                                 mono_error_cleanup (&error); /* FIXME don't swallow the error */
11302                                                                 /* FIXME: n is not a normal token */
11303                                                                 DISABLE_AOT (cfg);
11304                                                                 EMIT_NEW_PCONST (cfg, ins, NULL);
11305                                                         }
11306                                                 } else {
11307                                                         EMIT_NEW_TYPE_FROM_HANDLE_CONST (cfg, ins, image, n, generic_context);
11308                                                 }
11309                                         } else {
11310                                                 MonoReflectionType *rt = mono_type_get_object_checked (cfg->domain, (MonoType *)handle, &cfg->error);
11311                                                 CHECK_CFG_ERROR;
11312                                                 EMIT_NEW_PCONST (cfg, ins, rt);
11313                                         }
11314                                         ins->type = STACK_OBJ;
11315                                         ins->klass = cmethod->klass;
11316                                         ip += 5;
11317                                 } else {
11318                                         MonoInst *addr, *vtvar;
11319
11320                                         vtvar = mono_compile_create_var (cfg, &handle_class->byval_arg, OP_LOCAL);
11321
11322                                         if (context_used) {
11323                                                 if (handle_class == mono_defaults.typehandle_class) {
11324                                                         ins = mini_emit_get_rgctx_klass (cfg, context_used,
11325                                                                         mono_class_from_mono_type ((MonoType *)handle),
11326                                                                         MONO_RGCTX_INFO_TYPE);
11327                                                 } else if (handle_class == mono_defaults.methodhandle_class) {
11328                                                         ins = emit_get_rgctx_method (cfg, context_used,
11329                                                                         (MonoMethod *)handle, MONO_RGCTX_INFO_METHOD);
11330                                                 } else if (handle_class == mono_defaults.fieldhandle_class) {
11331                                                         ins = emit_get_rgctx_field (cfg, context_used,
11332                                                                         (MonoClassField *)handle, MONO_RGCTX_INFO_CLASS_FIELD);
11333                                                 } else {
11334                                                         g_assert_not_reached ();
11335                                                 }
11336                                         } else if (cfg->compile_aot) {
11337                                                 EMIT_NEW_LDTOKENCONST (cfg, ins, image, n, generic_context);
11338                                         } else {
11339                                                 EMIT_NEW_PCONST (cfg, ins, handle);
11340                                         }
11341                                         EMIT_NEW_TEMPLOADA (cfg, addr, vtvar->inst_c0);
11342                                         MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, addr->dreg, 0, ins->dreg);
11343                                         EMIT_NEW_TEMPLOAD (cfg, ins, vtvar->inst_c0);
11344                                 }
11345                         }
11346
11347                         *sp++ = ins;
11348                         ip += 5;
11349                         break;
11350                 }
11351                 case CEE_THROW:
11352                         CHECK_STACK (1);
11353                         if (sp [-1]->type != STACK_OBJ)
11354                                 UNVERIFIED;
11355
11356                         MONO_INST_NEW (cfg, ins, OP_THROW);
11357                         --sp;
11358                         ins->sreg1 = sp [0]->dreg;
11359                         ip++;
11360                         cfg->cbb->out_of_line = TRUE;
11361                         MONO_ADD_INS (cfg->cbb, ins);
11362                         MONO_INST_NEW (cfg, ins, OP_NOT_REACHED);
11363                         MONO_ADD_INS (cfg->cbb, ins);
11364                         sp = stack_start;
11365
11366                         link_bblock (cfg, cfg->cbb, end_bblock);
11367                         start_new_bblock = 1;
11368                         /* This can complicate code generation for llvm since the return value might not be defined */
11369                         if (COMPILE_LLVM (cfg))
11370                                 INLINE_FAILURE ("throw");
11371                         break;
11372                 case CEE_ENDFINALLY:
11373                         if (!ip_in_finally_clause (cfg, ip - header->code))
11374                                 UNVERIFIED;
11375                         /* mono_save_seq_point_info () depends on this */
11376                         if (sp != stack_start)
11377                                 emit_seq_point (cfg, method, ip, FALSE, FALSE);
11378                         MONO_INST_NEW (cfg, ins, OP_ENDFINALLY);
11379                         MONO_ADD_INS (cfg->cbb, ins);
11380                         ip++;
11381                         start_new_bblock = 1;
11382
11383                         /*
11384                          * Control will leave the method so empty the stack, otherwise
11385                          * the next basic block will start with a nonempty stack.
11386                          */
11387                         while (sp != stack_start) {
11388                                 sp--;
11389                         }
11390                         break;
11391                 case CEE_LEAVE:
11392                 case CEE_LEAVE_S: {
11393                         GList *handlers;
11394
11395                         if (*ip == CEE_LEAVE) {
11396                                 CHECK_OPSIZE (5);
11397                                 target = ip + 5 + (gint32)read32(ip + 1);
11398                         } else {
11399                                 CHECK_OPSIZE (2);
11400                                 target = ip + 2 + (signed char)(ip [1]);
11401                         }
11402
11403                         /* empty the stack */
11404                         while (sp != stack_start) {
11405                                 sp--;
11406                         }
11407
11408                         /*
11409                          * If this leave statement is in a catch block, check for a
11410                          * pending exception, and rethrow it if necessary.
11411                          * We avoid doing this in runtime invoke wrappers, since those are called
11412                          * by native code which excepts the wrapper to catch all exceptions.
11413                          */
11414                         for (i = 0; i < header->num_clauses; ++i) {
11415                                 MonoExceptionClause *clause = &header->clauses [i];
11416
11417                                 /*
11418                                  * Use <= in the final comparison to handle clauses with multiple
11419                                  * leave statements, like in bug #78024.
11420                                  * The ordering of the exception clauses guarantees that we find the
11421                                  * innermost clause.
11422                                  */
11423                                 if (MONO_OFFSET_IN_HANDLER (clause, ip - header->code) && (clause->flags == MONO_EXCEPTION_CLAUSE_NONE) && (ip - header->code + ((*ip == CEE_LEAVE) ? 5 : 2)) <= (clause->handler_offset + clause->handler_len) && method->wrapper_type != MONO_WRAPPER_RUNTIME_INVOKE) {
11424                                         MonoInst *exc_ins;
11425                                         MonoBasicBlock *dont_throw;
11426
11427                                         /*
11428                                           MonoInst *load;
11429
11430                                           NEW_TEMPLOAD (cfg, load, mono_find_exvar_for_offset (cfg, clause->handler_offset)->inst_c0);
11431                                         */
11432
11433                                         exc_ins = mono_emit_jit_icall (cfg, mono_thread_get_undeniable_exception, NULL);
11434
11435                                         NEW_BBLOCK (cfg, dont_throw);
11436
11437                                         /*
11438                                          * Currently, we always rethrow the abort exception, despite the
11439                                          * fact that this is not correct. See thread6.cs for an example.
11440                                          * But propagating the abort exception is more important than
11441                                          * getting the sematics right.
11442                                          */
11443                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, exc_ins->dreg, 0);
11444                                         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBEQ, dont_throw);
11445                                         MONO_EMIT_NEW_UNALU (cfg, OP_THROW, -1, exc_ins->dreg);
11446
11447                                         MONO_START_BB (cfg, dont_throw);
11448                                 }
11449                         }
11450
11451 #ifdef ENABLE_LLVM
11452                         cfg->cbb->try_end = (intptr_t)(ip - header->code);
11453 #endif
11454
11455                         if ((handlers = mono_find_final_block (cfg, ip, target, MONO_EXCEPTION_CLAUSE_FINALLY))) {
11456                                 GList *tmp;
11457
11458                                 for (tmp = handlers; tmp; tmp = tmp->next) {
11459                                         MonoExceptionClause *clause = (MonoExceptionClause *)tmp->data;
11460                                         MonoInst *abort_exc = (MonoInst *)mono_find_exvar_for_offset (cfg, clause->handler_offset);
11461                                         MonoBasicBlock *dont_throw;
11462
11463                                         tblock = cfg->cil_offset_to_bb [clause->handler_offset];
11464                                         g_assert (tblock);
11465                                         link_bblock (cfg, cfg->cbb, tblock);
11466
11467                                         MONO_EMIT_NEW_PCONST (cfg, abort_exc->dreg, 0);
11468
11469                                         MONO_INST_NEW (cfg, ins, OP_CALL_HANDLER);
11470                                         ins->inst_target_bb = tblock;
11471                                         ins->inst_eh_block = clause;
11472                                         MONO_ADD_INS (cfg->cbb, ins);
11473                                         cfg->cbb->has_call_handler = 1;
11474
11475                                         /* Throw exception if exvar is set */
11476                                         /* FIXME Do we need this for calls from catch/filter ? */
11477                                         NEW_BBLOCK (cfg, dont_throw);
11478                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, abort_exc->dreg, 0);
11479                                         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBEQ, dont_throw);
11480                                         mono_emit_jit_icall (cfg, mono_thread_self_abort, NULL);
11481                                         cfg->cbb->clause_hole = clause;
11482
11483                                         MONO_START_BB (cfg, dont_throw);
11484                                         cfg->cbb->clause_hole = clause;
11485
11486                                         if (COMPILE_LLVM (cfg)) {
11487                                                 MonoBasicBlock *target_bb;
11488
11489                                                 /*
11490                                                  * Link the finally bblock with the target, since it will
11491                                                  * conceptually branch there.
11492                                                  */
11493                                                 GET_BBLOCK (cfg, tblock, cfg->cil_start + clause->handler_offset + clause->handler_len - 1);
11494                                                 GET_BBLOCK (cfg, target_bb, target);
11495                                                 link_bblock (cfg, tblock, target_bb);
11496                                         }
11497                                 }
11498                                 g_list_free (handlers);
11499                         }
11500
11501                         MONO_INST_NEW (cfg, ins, OP_BR);
11502                         MONO_ADD_INS (cfg->cbb, ins);
11503                         GET_BBLOCK (cfg, tblock, target);
11504                         link_bblock (cfg, cfg->cbb, tblock);
11505                         ins->inst_target_bb = tblock;
11506
11507                         start_new_bblock = 1;
11508
11509                         if (*ip == CEE_LEAVE)
11510                                 ip += 5;
11511                         else
11512                                 ip += 2;
11513
11514                         break;
11515                 }
11516
11517                         /*
11518                          * Mono specific opcodes
11519                          */
11520                 case MONO_CUSTOM_PREFIX: {
11521
11522                         g_assert (method->wrapper_type != MONO_WRAPPER_NONE);
11523
11524                         CHECK_OPSIZE (2);
11525                         switch (ip [1]) {
11526                         case CEE_MONO_ICALL: {
11527                                 gpointer func;
11528                                 MonoJitICallInfo *info;
11529
11530                                 token = read32 (ip + 2);
11531                                 func = mono_method_get_wrapper_data (method, token);
11532                                 info = mono_find_jit_icall_by_addr (func);
11533                                 if (!info)
11534                                         g_error ("Could not find icall address in wrapper %s", mono_method_full_name (method, 1));
11535                                 g_assert (info);
11536
11537                                 CHECK_STACK (info->sig->param_count);
11538                                 sp -= info->sig->param_count;
11539
11540                                 if (cfg->compile_aot && !strcmp (info->name, "mono_threads_attach_coop")) {
11541                                         MonoInst *addr;
11542
11543                                         /*
11544                                          * This is called on unattached threads, so it cannot go through the trampoline
11545                                          * infrastructure. Use an indirect call through a got slot initialized at load time
11546                                          * instead.
11547                                          */
11548                                         EMIT_NEW_AOTCONST (cfg, addr, MONO_PATCH_INFO_JIT_ICALL_ADDR_NOCALL, (char*)info->name);
11549                                         ins = mini_emit_calli (cfg, info->sig, sp, addr, NULL, NULL);
11550                                 } else {
11551                                         ins = mono_emit_jit_icall (cfg, info->func, sp);
11552                                 }
11553
11554                                 if (!MONO_TYPE_IS_VOID (info->sig->ret))
11555                                         *sp++ = ins;
11556
11557                                 ip += 6;
11558                                 inline_costs += 10 * num_calls++;
11559
11560                                 break;
11561                         }
11562                         case CEE_MONO_LDPTR_CARD_TABLE:
11563                         case CEE_MONO_LDPTR_NURSERY_START:
11564                         case CEE_MONO_LDPTR_NURSERY_BITS:
11565                         case CEE_MONO_LDPTR_INT_REQ_FLAG:
11566                         case CEE_MONO_LDPTR_PROFILER_ALLOCATION_COUNT: {
11567                                 CHECK_STACK_OVF (1);
11568
11569                                 switch (ip [1]) {
11570                                 case CEE_MONO_LDPTR_CARD_TABLE:
11571                                         ins = mini_emit_runtime_constant (cfg, MONO_PATCH_INFO_GC_CARD_TABLE_ADDR, NULL);
11572                                         break;
11573                                 case CEE_MONO_LDPTR_NURSERY_START:
11574                                         ins = mini_emit_runtime_constant (cfg, MONO_PATCH_INFO_GC_NURSERY_START, NULL);
11575                                         break;
11576                                 case CEE_MONO_LDPTR_NURSERY_BITS:
11577                                         ins = mini_emit_runtime_constant (cfg, MONO_PATCH_INFO_GC_NURSERY_BITS, NULL);
11578                                         break;
11579                                 case CEE_MONO_LDPTR_INT_REQ_FLAG:
11580                                         ins = mini_emit_runtime_constant (cfg, MONO_PATCH_INFO_INTERRUPTION_REQUEST_FLAG, NULL);
11581                                         break;
11582                                 case CEE_MONO_LDPTR_PROFILER_ALLOCATION_COUNT:
11583                                         ins = mini_emit_runtime_constant (cfg, MONO_PATCH_INFO_PROFILER_ALLOCATION_COUNT, NULL);
11584                                         break;
11585                                 default:
11586                                         g_assert_not_reached ();
11587                                         break;
11588                                 }
11589
11590                                 *sp++ = ins;
11591                                 ip += 2;
11592                                 inline_costs += 10 * num_calls++;
11593                                 break;
11594                         }
11595                         case CEE_MONO_LDPTR: {
11596                                 gpointer ptr;
11597
11598                                 CHECK_STACK_OVF (1);
11599                                 CHECK_OPSIZE (6);
11600                                 token = read32 (ip + 2);
11601
11602                                 ptr = mono_method_get_wrapper_data (method, token);
11603                                 EMIT_NEW_PCONST (cfg, ins, ptr);
11604                                 *sp++ = ins;
11605                                 ip += 6;
11606                                 inline_costs += 10 * num_calls++;
11607                                 /* Can't embed random pointers into AOT code */
11608                                 DISABLE_AOT (cfg);
11609                                 break;
11610                         }
11611                         case CEE_MONO_JIT_ICALL_ADDR: {
11612                                 MonoJitICallInfo *callinfo;
11613                                 gpointer ptr;
11614
11615                                 CHECK_STACK_OVF (1);
11616                                 CHECK_OPSIZE (6);
11617                                 token = read32 (ip + 2);
11618
11619                                 ptr = mono_method_get_wrapper_data (method, token);
11620                                 callinfo = mono_find_jit_icall_by_addr (ptr);
11621                                 g_assert (callinfo);
11622                                 EMIT_NEW_JIT_ICALL_ADDRCONST (cfg, ins, (char*)callinfo->name);
11623                                 *sp++ = ins;
11624                                 ip += 6;
11625                                 inline_costs += 10 * num_calls++;
11626                                 break;
11627                         }
11628                         case CEE_MONO_ICALL_ADDR: {
11629                                 MonoMethod *cmethod;
11630                                 gpointer ptr;
11631
11632                                 CHECK_STACK_OVF (1);
11633                                 CHECK_OPSIZE (6);
11634                                 token = read32 (ip + 2);
11635
11636                                 cmethod = (MonoMethod *)mono_method_get_wrapper_data (method, token);
11637
11638                                 if (cfg->compile_aot) {
11639                                         if (cfg->direct_pinvoke && ip + 6 < end && (ip [6] == CEE_POP)) {
11640                                                 /*
11641                                                  * This is generated by emit_native_wrapper () to resolve the pinvoke address
11642                                                  * before the call, its not needed when using direct pinvoke.
11643                                                  * This is not an optimization, but its used to avoid looking up pinvokes
11644                                                  * on platforms which don't support dlopen ().
11645                                                  */
11646                                                 EMIT_NEW_PCONST (cfg, ins, NULL);
11647                                         } else {
11648                                                 EMIT_NEW_AOTCONST (cfg, ins, MONO_PATCH_INFO_ICALL_ADDR, cmethod);
11649                                         }
11650                                 } else {
11651                                         ptr = mono_lookup_internal_call (cmethod);
11652                                         g_assert (ptr);
11653                                         EMIT_NEW_PCONST (cfg, ins, ptr);
11654                                 }
11655                                 *sp++ = ins;
11656                                 ip += 6;
11657                                 break;
11658                         }
11659                         case CEE_MONO_VTADDR: {
11660                                 MonoInst *src_var, *src;
11661
11662                                 CHECK_STACK (1);
11663                                 --sp;
11664
11665                                 // FIXME:
11666                                 src_var = get_vreg_to_inst (cfg, sp [0]->dreg);
11667                                 EMIT_NEW_VARLOADA ((cfg), (src), src_var, src_var->inst_vtype);
11668                                 *sp++ = src;
11669                                 ip += 2;
11670                                 break;
11671                         }
11672                         case CEE_MONO_NEWOBJ: {
11673                                 MonoInst *iargs [2];
11674
11675                                 CHECK_STACK_OVF (1);
11676                                 CHECK_OPSIZE (6);
11677                                 token = read32 (ip + 2);
11678                                 klass = (MonoClass *)mono_method_get_wrapper_data (method, token);
11679                                 mono_class_init (klass);
11680                                 NEW_DOMAINCONST (cfg, iargs [0]);
11681                                 MONO_ADD_INS (cfg->cbb, iargs [0]);
11682                                 NEW_CLASSCONST (cfg, iargs [1], klass);
11683                                 MONO_ADD_INS (cfg->cbb, iargs [1]);
11684                                 *sp++ = mono_emit_jit_icall (cfg, ves_icall_object_new, iargs);
11685                                 ip += 6;
11686                                 inline_costs += 10 * num_calls++;
11687                                 break;
11688                         }
11689                         case CEE_MONO_OBJADDR:
11690                                 CHECK_STACK (1);
11691                                 --sp;
11692                                 MONO_INST_NEW (cfg, ins, OP_MOVE);
11693                                 ins->dreg = alloc_ireg_mp (cfg);
11694                                 ins->sreg1 = sp [0]->dreg;
11695                                 ins->type = STACK_MP;
11696                                 MONO_ADD_INS (cfg->cbb, ins);
11697                                 *sp++ = ins;
11698                                 ip += 2;
11699                                 break;
11700                         case CEE_MONO_LDNATIVEOBJ:
11701                                 /*
11702                                  * Similar to LDOBJ, but instead load the unmanaged
11703                                  * representation of the vtype to the stack.
11704                                  */
11705                                 CHECK_STACK (1);
11706                                 CHECK_OPSIZE (6);
11707                                 --sp;
11708                                 token = read32 (ip + 2);
11709                                 klass = (MonoClass *)mono_method_get_wrapper_data (method, token);
11710                                 g_assert (klass->valuetype);
11711                                 mono_class_init (klass);
11712
11713                                 {
11714                                         MonoInst *src, *dest, *temp;
11715
11716                                         src = sp [0];
11717                                         temp = mono_compile_create_var (cfg, &klass->byval_arg, OP_LOCAL);
11718                                         temp->backend.is_pinvoke = 1;
11719                                         EMIT_NEW_TEMPLOADA (cfg, dest, temp->inst_c0);
11720                                         mini_emit_memory_copy (cfg, dest, src, klass, TRUE, 0);
11721
11722                                         EMIT_NEW_TEMPLOAD (cfg, dest, temp->inst_c0);
11723                                         dest->type = STACK_VTYPE;
11724                                         dest->klass = klass;
11725
11726                                         *sp ++ = dest;
11727                                         ip += 6;
11728                                 }
11729                                 break;
11730                         case CEE_MONO_RETOBJ: {
11731                                 /*
11732                                  * Same as RET, but return the native representation of a vtype
11733                                  * to the caller.
11734                                  */
11735                                 g_assert (cfg->ret);
11736                                 g_assert (mono_method_signature (method)->pinvoke);
11737                                 CHECK_STACK (1);
11738                                 --sp;
11739
11740                                 CHECK_OPSIZE (6);
11741                                 token = read32 (ip + 2);
11742                                 klass = (MonoClass *)mono_method_get_wrapper_data (method, token);
11743
11744                                 if (!cfg->vret_addr) {
11745                                         g_assert (cfg->ret_var_is_local);
11746
11747                                         EMIT_NEW_VARLOADA (cfg, ins, cfg->ret, cfg->ret->inst_vtype);
11748                                 } else {
11749                                         EMIT_NEW_RETLOADA (cfg, ins);
11750                                 }
11751                                 mini_emit_memory_copy (cfg, ins, sp [0], klass, TRUE, 0);
11752
11753                                 if (sp != stack_start)
11754                                         UNVERIFIED;
11755
11756                                 MONO_INST_NEW (cfg, ins, OP_BR);
11757                                 ins->inst_target_bb = end_bblock;
11758                                 MONO_ADD_INS (cfg->cbb, ins);
11759                                 link_bblock (cfg, cfg->cbb, end_bblock);
11760                                 start_new_bblock = 1;
11761                                 ip += 6;
11762                                 break;
11763                         }
11764                         case CEE_MONO_SAVE_LMF:
11765                         case CEE_MONO_RESTORE_LMF:
11766                                 ip += 2;
11767                                 break;
11768                         case CEE_MONO_CLASSCONST:
11769                                 CHECK_STACK_OVF (1);
11770                                 CHECK_OPSIZE (6);
11771                                 token = read32 (ip + 2);
11772                                 EMIT_NEW_CLASSCONST (cfg, ins, mono_method_get_wrapper_data (method, token));
11773                                 *sp++ = ins;
11774                                 ip += 6;
11775                                 inline_costs += 10 * num_calls++;
11776                                 break;
11777                         case CEE_MONO_NOT_TAKEN:
11778                                 cfg->cbb->out_of_line = TRUE;
11779                                 ip += 2;
11780                                 break;
11781                         case CEE_MONO_TLS: {
11782                                 MonoTlsKey key;
11783
11784                                 CHECK_STACK_OVF (1);
11785                                 CHECK_OPSIZE (6);
11786                                 key = (MonoTlsKey)read32 (ip + 2);
11787                                 g_assert (key < TLS_KEY_NUM);
11788
11789                                 ins = mono_create_tls_get (cfg, key);
11790                                 g_assert (ins);
11791                                 ins->type = STACK_PTR;
11792                                 *sp++ = ins;
11793                                 ip += 6;
11794                                 break;
11795                         }
11796                         case CEE_MONO_DYN_CALL: {
11797                                 MonoCallInst *call;
11798
11799                                 /* It would be easier to call a trampoline, but that would put an
11800                                  * extra frame on the stack, confusing exception handling. So
11801                                  * implement it inline using an opcode for now.
11802                                  */
11803
11804                                 if (!cfg->dyn_call_var) {
11805                                         cfg->dyn_call_var = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
11806                                         /* prevent it from being register allocated */
11807                                         cfg->dyn_call_var->flags |= MONO_INST_VOLATILE;
11808                                 }
11809
11810                                 /* Has to use a call inst since it local regalloc expects it */
11811                                 MONO_INST_NEW_CALL (cfg, call, OP_DYN_CALL);
11812                                 ins = (MonoInst*)call;
11813                                 sp -= 2;
11814                                 ins->sreg1 = sp [0]->dreg;
11815                                 ins->sreg2 = sp [1]->dreg;
11816                                 MONO_ADD_INS (cfg->cbb, ins);
11817
11818                                 cfg->param_area = MAX (cfg->param_area, cfg->backend->dyn_call_param_area);
11819
11820                                 ip += 2;
11821                                 inline_costs += 10 * num_calls++;
11822
11823                                 break;
11824                         }
11825                         case CEE_MONO_MEMORY_BARRIER: {
11826                                 CHECK_OPSIZE (6);
11827                                 mini_emit_memory_barrier (cfg, (int)read32 (ip + 2));
11828                                 ip += 6;
11829                                 break;
11830                         }
11831                         case CEE_MONO_ATOMIC_STORE_I4: {
11832                                 g_assert (mono_arch_opcode_supported (OP_ATOMIC_STORE_I4));
11833
11834                                 CHECK_OPSIZE (6);
11835                                 CHECK_STACK (2);
11836                                 sp -= 2;
11837
11838                                 MONO_INST_NEW (cfg, ins, OP_ATOMIC_STORE_I4);
11839                                 ins->dreg = sp [0]->dreg;
11840                                 ins->sreg1 = sp [1]->dreg;
11841                                 ins->backend.memory_barrier_kind = (int) read32 (ip + 2);
11842                                 MONO_ADD_INS (cfg->cbb, ins);
11843
11844                                 ip += 6;
11845                                 break;
11846                         }
11847                         case CEE_MONO_JIT_ATTACH: {
11848                                 MonoInst *args [16], *domain_ins;
11849                                 MonoInst *ad_ins, *jit_tls_ins;
11850                                 MonoBasicBlock *next_bb = NULL, *call_bb = NULL;
11851
11852                                 g_assert (!mono_threads_is_blocking_transition_enabled ());
11853
11854                                 cfg->orig_domain_var = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
11855
11856                                 EMIT_NEW_PCONST (cfg, ins, NULL);
11857                                 MONO_EMIT_NEW_UNALU (cfg, OP_MOVE, cfg->orig_domain_var->dreg, ins->dreg);
11858
11859                                 ad_ins = mono_create_tls_get (cfg, TLS_KEY_DOMAIN);
11860                                 jit_tls_ins = mono_create_tls_get (cfg, TLS_KEY_JIT_TLS);
11861
11862                                 if (ad_ins && jit_tls_ins) {
11863                                         NEW_BBLOCK (cfg, next_bb);
11864                                         NEW_BBLOCK (cfg, call_bb);
11865
11866                                         if (cfg->compile_aot) {
11867                                                 /* AOT code is only used in the root domain */
11868                                                 EMIT_NEW_PCONST (cfg, domain_ins, NULL);
11869                                         } else {
11870                                                 EMIT_NEW_PCONST (cfg, domain_ins, cfg->domain);
11871                                         }
11872                                         MONO_EMIT_NEW_BIALU (cfg, OP_COMPARE, -1, ad_ins->dreg, domain_ins->dreg);
11873                                         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBNE_UN, call_bb);
11874
11875                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, jit_tls_ins->dreg, 0);
11876                                         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBEQ, call_bb);
11877
11878                                         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, next_bb);
11879                                         MONO_START_BB (cfg, call_bb);
11880                                 }
11881
11882                                 /* AOT code is only used in the root domain */
11883                                 EMIT_NEW_PCONST (cfg, args [0], cfg->compile_aot ? NULL : cfg->domain);
11884                                 if (cfg->compile_aot) {
11885                                         MonoInst *addr;
11886
11887                                         /*
11888                                          * This is called on unattached threads, so it cannot go through the trampoline
11889                                          * infrastructure. Use an indirect call through a got slot initialized at load time
11890                                          * instead.
11891                                          */
11892                                         EMIT_NEW_AOTCONST (cfg, addr, MONO_PATCH_INFO_JIT_THREAD_ATTACH, NULL);
11893                                         ins = mini_emit_calli (cfg, helper_sig_jit_thread_attach, args, addr, NULL, NULL);
11894                                 } else {
11895                                         ins = mono_emit_jit_icall (cfg, mono_jit_thread_attach, args);
11896                                 }
11897                                 MONO_EMIT_NEW_UNALU (cfg, OP_MOVE, cfg->orig_domain_var->dreg, ins->dreg);
11898
11899                                 if (next_bb)
11900                                         MONO_START_BB (cfg, next_bb);
11901
11902                                 ip += 2;
11903                                 break;
11904                         }
11905                         case CEE_MONO_JIT_DETACH: {
11906                                 MonoInst *args [16];
11907
11908                                 /* Restore the original domain */
11909                                 dreg = alloc_ireg (cfg);
11910                                 EMIT_NEW_UNALU (cfg, args [0], OP_MOVE, dreg, cfg->orig_domain_var->dreg);
11911                                 mono_emit_jit_icall (cfg, mono_jit_set_domain, args);
11912                                 ip += 2;
11913                                 break;
11914                         }
11915                         case CEE_MONO_CALLI_EXTRA_ARG: {
11916                                 MonoInst *addr;
11917                                 MonoMethodSignature *fsig;
11918                                 MonoInst *arg;
11919
11920                                 /*
11921                                  * This is the same as CEE_CALLI, but passes an additional argument
11922                                  * to the called method in llvmonly mode.
11923                                  * This is only used by delegate invoke wrappers to call the
11924                                  * actual delegate method.
11925                                  */
11926                                 g_assert (method->wrapper_type == MONO_WRAPPER_DELEGATE_INVOKE);
11927
11928                                 CHECK_OPSIZE (6);
11929                                 token = read32 (ip + 2);
11930
11931                                 ins = NULL;
11932
11933                                 cmethod = NULL;
11934                                 CHECK_STACK (1);
11935                                 --sp;
11936                                 addr = *sp;
11937                                 fsig = mini_get_signature (method, token, generic_context, &cfg->error);
11938                                 CHECK_CFG_ERROR;
11939
11940                                 if (cfg->llvm_only)
11941                                         cfg->signatures = g_slist_prepend_mempool (cfg->mempool, cfg->signatures, fsig);
11942
11943                                 n = fsig->param_count + fsig->hasthis + 1;
11944
11945                                 CHECK_STACK (n);
11946
11947                                 sp -= n;
11948                                 arg = sp [n - 1];
11949
11950                                 if (cfg->llvm_only) {
11951                                         /*
11952                                          * The lowest bit of 'arg' determines whenever the callee uses the gsharedvt
11953                                          * cconv. This is set by mono_init_delegate ().
11954                                          */
11955                                         if (cfg->gsharedvt && mini_is_gsharedvt_variable_signature (fsig)) {
11956                                                 MonoInst *callee = addr;
11957                                                 MonoInst *call, *localloc_ins;
11958                                                 MonoBasicBlock *is_gsharedvt_bb, *end_bb;
11959                                                 int low_bit_reg = alloc_preg (cfg);
11960
11961                                                 NEW_BBLOCK (cfg, is_gsharedvt_bb);
11962                                                 NEW_BBLOCK (cfg, end_bb);
11963
11964                                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_PAND_IMM, low_bit_reg, arg->dreg, 1);
11965                                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, low_bit_reg, 0);
11966                                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBNE_UN, is_gsharedvt_bb);
11967
11968                                                 /* Normal case: callee uses a normal cconv, have to add an out wrapper */
11969                                                 addr = emit_get_rgctx_sig (cfg, context_used,
11970                                                                                                    fsig, MONO_RGCTX_INFO_SIG_GSHAREDVT_OUT_TRAMPOLINE_CALLI);
11971                                                 /*
11972                                                  * ADDR points to a gsharedvt-out wrapper, have to pass <callee, arg> as an extra arg.
11973                                                  */
11974                                                 MONO_INST_NEW (cfg, ins, OP_LOCALLOC_IMM);
11975                                                 ins->dreg = alloc_preg (cfg);
11976                                                 ins->inst_imm = 2 * SIZEOF_VOID_P;
11977                                                 MONO_ADD_INS (cfg->cbb, ins);
11978                                                 localloc_ins = ins;
11979                                                 cfg->flags |= MONO_CFG_HAS_ALLOCA;
11980                                                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, localloc_ins->dreg, 0, callee->dreg);
11981                                                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, localloc_ins->dreg, SIZEOF_VOID_P, arg->dreg);
11982
11983                                                 call = emit_extra_arg_calli (cfg, fsig, sp, localloc_ins->dreg, addr);
11984                                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
11985
11986                                                 /* Gsharedvt case: callee uses a gsharedvt cconv, no conversion is needed */
11987                                                 MONO_START_BB (cfg, is_gsharedvt_bb);
11988                                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_PXOR_IMM, arg->dreg, arg->dreg, 1);
11989                                                 ins = emit_extra_arg_calli (cfg, fsig, sp, arg->dreg, callee);
11990                                                 ins->dreg = call->dreg;
11991
11992                                                 MONO_START_BB (cfg, end_bb);
11993                                         } else {
11994                                                 /* Caller uses a normal calling conv */
11995
11996                                                 MonoInst *callee = addr;
11997                                                 MonoInst *call, *localloc_ins;
11998                                                 MonoBasicBlock *is_gsharedvt_bb, *end_bb;
11999                                                 int low_bit_reg = alloc_preg (cfg);
12000
12001                                                 NEW_BBLOCK (cfg, is_gsharedvt_bb);
12002                                                 NEW_BBLOCK (cfg, end_bb);
12003
12004                                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_PAND_IMM, low_bit_reg, arg->dreg, 1);
12005                                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, low_bit_reg, 0);
12006                                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBNE_UN, is_gsharedvt_bb);
12007
12008                                                 /* Normal case: callee uses a normal cconv, no conversion is needed */
12009                                                 call = emit_extra_arg_calli (cfg, fsig, sp, arg->dreg, callee);
12010                                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
12011                                                 /* Gsharedvt case: callee uses a gsharedvt cconv, have to add an in wrapper */
12012                                                 MONO_START_BB (cfg, is_gsharedvt_bb);
12013                                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_PXOR_IMM, arg->dreg, arg->dreg, 1);
12014                                                 NEW_AOTCONST (cfg, addr, MONO_PATCH_INFO_GSHAREDVT_IN_WRAPPER, fsig);
12015                                                 MONO_ADD_INS (cfg->cbb, addr);
12016                                                 /*
12017                                                  * ADDR points to a gsharedvt-in wrapper, have to pass <callee, arg> as an extra arg.
12018                                                  */
12019                                                 MONO_INST_NEW (cfg, ins, OP_LOCALLOC_IMM);
12020                                                 ins->dreg = alloc_preg (cfg);
12021                                                 ins->inst_imm = 2 * SIZEOF_VOID_P;
12022                                                 MONO_ADD_INS (cfg->cbb, ins);
12023                                                 localloc_ins = ins;
12024                                                 cfg->flags |= MONO_CFG_HAS_ALLOCA;
12025                                                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, localloc_ins->dreg, 0, callee->dreg);
12026                                                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, localloc_ins->dreg, SIZEOF_VOID_P, arg->dreg);
12027
12028                                                 ins = emit_extra_arg_calli (cfg, fsig, sp, localloc_ins->dreg, addr);
12029                                                 ins->dreg = call->dreg;
12030                                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
12031
12032                                                 MONO_START_BB (cfg, end_bb);
12033                                         }
12034                                 } else {
12035                                         /* Same as CEE_CALLI */
12036                                         if (cfg->gsharedvt && mini_is_gsharedvt_signature (fsig)) {
12037                                                 /*
12038                                                  * We pass the address to the gsharedvt trampoline in the rgctx reg
12039                                                  */
12040                                                 MonoInst *callee = addr;
12041
12042                                                 addr = emit_get_rgctx_sig (cfg, context_used,
12043                                                                                                    fsig, MONO_RGCTX_INFO_SIG_GSHAREDVT_OUT_TRAMPOLINE_CALLI);
12044                                                 ins = (MonoInst*)mini_emit_calli (cfg, fsig, sp, addr, NULL, callee);
12045                                         } else {
12046                                                 ins = (MonoInst*)mini_emit_calli (cfg, fsig, sp, addr, NULL, NULL);
12047                                         }
12048                                 }
12049
12050                                 if (!MONO_TYPE_IS_VOID (fsig->ret))
12051                                         *sp++ = mono_emit_widen_call_res (cfg, ins, fsig);
12052
12053                                 CHECK_CFG_EXCEPTION;
12054
12055                                 ip += 6;
12056                                 ins_flag = 0;
12057                                 constrained_class = NULL;
12058                                 break;
12059                         }
12060                         case CEE_MONO_LDDOMAIN:
12061                                 CHECK_STACK_OVF (1);
12062                                 EMIT_NEW_PCONST (cfg, ins, cfg->compile_aot ? NULL : cfg->domain);
12063                                 ip += 2;
12064                                 *sp++ = ins;
12065                                 break;
12066                         case CEE_MONO_GET_LAST_ERROR:
12067                                 CHECK_OPSIZE (2);
12068                                 CHECK_STACK_OVF (1);
12069
12070                                 MONO_INST_NEW (cfg, ins, OP_GET_LAST_ERROR);
12071                                 ins->dreg = alloc_dreg (cfg, STACK_I4);
12072                                 ins->type = STACK_I4;
12073                                 MONO_ADD_INS (cfg->cbb, ins);
12074
12075                                 ip += 2;
12076                                 *sp++ = ins;
12077                                 break;
12078                         case CEE_MONO_GET_RGCTX_ARG:
12079                                 CHECK_OPSIZE (2);
12080                                 CHECK_STACK_OVF (1);
12081
12082                                 mono_create_rgctx_var (cfg);
12083
12084                                 MONO_INST_NEW (cfg, ins, OP_MOVE);
12085                                 ins->dreg = alloc_dreg (cfg, STACK_PTR);
12086                                 ins->sreg1 = cfg->rgctx_var->dreg;
12087                                 ins->type = STACK_PTR;
12088                                 MONO_ADD_INS (cfg->cbb, ins);
12089
12090                                 ip += 2;
12091                                 *sp++ = ins;
12092                                 break;
12093                         default:
12094                                 g_error ("opcode 0x%02x 0x%02x not handled", MONO_CUSTOM_PREFIX, ip [1]);
12095                                 break;
12096                         }
12097                         break;
12098                 }
12099
12100                 case CEE_PREFIX1: {
12101                         CHECK_OPSIZE (2);
12102                         switch (ip [1]) {
12103                         case CEE_ARGLIST: {
12104                                 /* somewhat similar to LDTOKEN */
12105                                 MonoInst *addr, *vtvar;
12106                                 CHECK_STACK_OVF (1);
12107                                 vtvar = mono_compile_create_var (cfg, &mono_defaults.argumenthandle_class->byval_arg, OP_LOCAL);
12108
12109                                 EMIT_NEW_TEMPLOADA (cfg, addr, vtvar->inst_c0);
12110                                 EMIT_NEW_UNALU (cfg, ins, OP_ARGLIST, -1, addr->dreg);
12111
12112                                 EMIT_NEW_TEMPLOAD (cfg, ins, vtvar->inst_c0);
12113                                 ins->type = STACK_VTYPE;
12114                                 ins->klass = mono_defaults.argumenthandle_class;
12115                                 *sp++ = ins;
12116                                 ip += 2;
12117                                 break;
12118                         }
12119                         case CEE_CEQ:
12120                         case CEE_CGT:
12121                         case CEE_CGT_UN:
12122                         case CEE_CLT:
12123                         case CEE_CLT_UN: {
12124                                 MonoInst *cmp, *arg1, *arg2;
12125
12126                                 CHECK_STACK (2);
12127                                 sp -= 2;
12128                                 arg1 = sp [0];
12129                                 arg2 = sp [1];
12130
12131                                 /*
12132                                  * The following transforms:
12133                                  *    CEE_CEQ    into OP_CEQ
12134                                  *    CEE_CGT    into OP_CGT
12135                                  *    CEE_CGT_UN into OP_CGT_UN
12136                                  *    CEE_CLT    into OP_CLT
12137                                  *    CEE_CLT_UN into OP_CLT_UN
12138                                  */
12139                                 MONO_INST_NEW (cfg, cmp, (OP_CEQ - CEE_CEQ) + ip [1]);
12140
12141                                 MONO_INST_NEW (cfg, ins, cmp->opcode);
12142                                 cmp->sreg1 = arg1->dreg;
12143                                 cmp->sreg2 = arg2->dreg;
12144                                 type_from_op (cfg, cmp, arg1, arg2);
12145                                 CHECK_TYPE (cmp);
12146                                 add_widen_op (cfg, cmp, &arg1, &arg2);
12147                                 if ((arg1->type == STACK_I8) || ((SIZEOF_VOID_P == 8) && ((arg1->type == STACK_PTR) || (arg1->type == STACK_OBJ) || (arg1->type == STACK_MP))))
12148                                         cmp->opcode = OP_LCOMPARE;
12149                                 else if (arg1->type == STACK_R4)
12150                                         cmp->opcode = OP_RCOMPARE;
12151                                 else if (arg1->type == STACK_R8)
12152                                         cmp->opcode = OP_FCOMPARE;
12153                                 else
12154                                         cmp->opcode = OP_ICOMPARE;
12155                                 MONO_ADD_INS (cfg->cbb, cmp);
12156                                 ins->type = STACK_I4;
12157                                 ins->dreg = alloc_dreg (cfg, (MonoStackType)ins->type);
12158                                 type_from_op (cfg, ins, arg1, arg2);
12159
12160                                 if (cmp->opcode == OP_FCOMPARE || cmp->opcode == OP_RCOMPARE) {
12161                                         /*
12162                                          * The backends expect the fceq opcodes to do the
12163                                          * comparison too.
12164                                          */
12165                                         ins->sreg1 = cmp->sreg1;
12166                                         ins->sreg2 = cmp->sreg2;
12167                                         NULLIFY_INS (cmp);
12168                                 }
12169                                 MONO_ADD_INS (cfg->cbb, ins);
12170                                 *sp++ = ins;
12171                                 ip += 2;
12172                                 break;
12173                         }
12174                         case CEE_LDFTN: {
12175                                 MonoInst *argconst;
12176                                 MonoMethod *cil_method;
12177
12178                                 CHECK_STACK_OVF (1);
12179                                 CHECK_OPSIZE (6);
12180                                 n = read32 (ip + 2);
12181                                 cmethod = mini_get_method (cfg, method, n, NULL, generic_context);
12182                                 CHECK_CFG_ERROR;
12183
12184                                 mono_class_init (cmethod->klass);
12185
12186                                 mono_save_token_info (cfg, image, n, cmethod);
12187
12188                                 context_used = mini_method_check_context_used (cfg, cmethod);
12189
12190                                 cil_method = cmethod;
12191                                 if (!dont_verify && !cfg->skip_visibility && !mono_method_can_access_method (method, cmethod))
12192                                         emit_method_access_failure (cfg, method, cil_method);
12193
12194                                 if (mono_security_core_clr_enabled ())
12195                                         ensure_method_is_allowed_to_call_method (cfg, method, cmethod);
12196
12197                                 /*
12198                                  * Optimize the common case of ldftn+delegate creation
12199                                  */
12200                                 if ((sp > stack_start) && (ip + 6 + 5 < end) && ip_in_bb (cfg, cfg->cbb, ip + 6) && (ip [6] == CEE_NEWOBJ)) {
12201                                         MonoMethod *ctor_method = mini_get_method (cfg, method, read32 (ip + 7), NULL, generic_context);
12202                                         if (ctor_method && (ctor_method->klass->parent == mono_defaults.multicastdelegate_class)) {
12203                                                 MonoInst *target_ins, *handle_ins;
12204                                                 MonoMethod *invoke;
12205                                                 int invoke_context_used;
12206
12207                                                 invoke = mono_get_delegate_invoke (ctor_method->klass);
12208                                                 if (!invoke || !mono_method_signature (invoke))
12209                                                         LOAD_ERROR;
12210
12211                                                 invoke_context_used = mini_method_check_context_used (cfg, invoke);
12212
12213                                                 target_ins = sp [-1];
12214
12215                                                 if (mono_security_core_clr_enabled ())
12216                                                         ensure_method_is_allowed_to_call_method (cfg, method, ctor_method);
12217
12218                                                 if (!(cmethod->flags & METHOD_ATTRIBUTE_STATIC)) {
12219                                                         /*LAME IMPL: We must not add a null check for virtual invoke delegates.*/
12220                                                         if (mono_method_signature (invoke)->param_count == mono_method_signature (cmethod)->param_count) {
12221                                                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, target_ins->dreg, 0);
12222                                                                 MONO_EMIT_NEW_COND_EXC (cfg, EQ, "ArgumentException");
12223                                                         }
12224                                                 }
12225
12226                                                 /* FIXME: SGEN support */
12227                                                 if (invoke_context_used == 0 || cfg->llvm_only) {
12228                                                         ip += 6;
12229                                                         if (cfg->verbose_level > 3)
12230                                                                 g_print ("converting (in B%d: stack: %d) %s", cfg->cbb->block_num, (int)(sp - stack_start), mono_disasm_code_one (NULL, method, ip, NULL));
12231                                                         if ((handle_ins = handle_delegate_ctor (cfg, ctor_method->klass, target_ins, cmethod, context_used, FALSE))) {
12232                                                                 sp --;
12233                                                                 *sp = handle_ins;
12234                                                                 CHECK_CFG_EXCEPTION;
12235                                                                 ip += 5;
12236                                                                 sp ++;
12237                                                                 break;
12238                                                         }
12239                                                         ip -= 6;
12240                                                 }
12241                                         }
12242                                 }
12243
12244                                 argconst = emit_get_rgctx_method (cfg, context_used, cmethod, MONO_RGCTX_INFO_METHOD);
12245                                 ins = mono_emit_jit_icall (cfg, mono_ldftn, &argconst);
12246                                 *sp++ = ins;
12247
12248                                 ip += 6;
12249                                 inline_costs += 10 * num_calls++;
12250                                 break;
12251                         }
12252                         case CEE_LDVIRTFTN: {
12253                                 MonoInst *args [2];
12254
12255                                 CHECK_STACK (1);
12256                                 CHECK_OPSIZE (6);
12257                                 n = read32 (ip + 2);
12258                                 cmethod = mini_get_method (cfg, method, n, NULL, generic_context);
12259                                 CHECK_CFG_ERROR;
12260
12261                                 mono_class_init (cmethod->klass);
12262
12263                                 context_used = mini_method_check_context_used (cfg, cmethod);
12264
12265                                 if (mono_security_core_clr_enabled ())
12266                                         ensure_method_is_allowed_to_call_method (cfg, method, cmethod);
12267
12268                                 /*
12269                                  * Optimize the common case of ldvirtftn+delegate creation
12270                                  */
12271                                 if ((sp > stack_start) && (ip + 6 + 5 < end) && ip_in_bb (cfg, cfg->cbb, ip + 6) && (ip [6] == CEE_NEWOBJ) && (ip > header->code && ip [-1] == CEE_DUP)) {
12272                                         MonoMethod *ctor_method = mini_get_method (cfg, method, read32 (ip + 7), NULL, generic_context);
12273                                         if (ctor_method && (ctor_method->klass->parent == mono_defaults.multicastdelegate_class)) {
12274                                                 MonoInst *target_ins, *handle_ins;
12275                                                 MonoMethod *invoke;
12276                                                 int invoke_context_used;
12277                                                 gboolean is_virtual = cmethod->flags & METHOD_ATTRIBUTE_VIRTUAL;
12278
12279                                                 invoke = mono_get_delegate_invoke (ctor_method->klass);
12280                                                 if (!invoke || !mono_method_signature (invoke))
12281                                                         LOAD_ERROR;
12282
12283                                                 invoke_context_used = mini_method_check_context_used (cfg, invoke);
12284
12285                                                 target_ins = sp [-1];
12286
12287                                                 if (mono_security_core_clr_enabled ())
12288                                                         ensure_method_is_allowed_to_call_method (cfg, method, ctor_method);
12289
12290                                                 /* FIXME: SGEN support */
12291                                                 if (invoke_context_used == 0 || cfg->llvm_only) {
12292                                                         ip += 6;
12293                                                         if (cfg->verbose_level > 3)
12294                                                                 g_print ("converting (in B%d: stack: %d) %s", cfg->cbb->block_num, (int)(sp - stack_start), mono_disasm_code_one (NULL, method, ip, NULL));
12295                                                         if ((handle_ins = handle_delegate_ctor (cfg, ctor_method->klass, target_ins, cmethod, context_used, is_virtual))) {
12296                                                                 sp -= 2;
12297                                                                 *sp = handle_ins;
12298                                                                 CHECK_CFG_EXCEPTION;
12299                                                                 ip += 5;
12300                                                                 sp ++;
12301                                                                 break;
12302                                                         }
12303                                                         ip -= 6;
12304                                                 }
12305                                         }
12306                                 }
12307
12308                                 --sp;
12309                                 args [0] = *sp;
12310
12311                                 args [1] = emit_get_rgctx_method (cfg, context_used,
12312                                                                                                   cmethod, MONO_RGCTX_INFO_METHOD);
12313
12314                                 if (context_used)
12315                                         *sp++ = mono_emit_jit_icall (cfg, mono_ldvirtfn_gshared, args);
12316                                 else
12317                                         *sp++ = mono_emit_jit_icall (cfg, mono_ldvirtfn, args);
12318
12319                                 ip += 6;
12320                                 inline_costs += 10 * num_calls++;
12321                                 break;
12322                         }
12323                         case CEE_LDARG:
12324                                 CHECK_STACK_OVF (1);
12325                                 CHECK_OPSIZE (4);
12326                                 n = read16 (ip + 2);
12327                                 CHECK_ARG (n);
12328                                 EMIT_NEW_ARGLOAD (cfg, ins, n);
12329                                 *sp++ = ins;
12330                                 ip += 4;
12331                                 break;
12332                         case CEE_LDARGA:
12333                                 CHECK_STACK_OVF (1);
12334                                 CHECK_OPSIZE (4);
12335                                 n = read16 (ip + 2);
12336                                 CHECK_ARG (n);
12337                                 NEW_ARGLOADA (cfg, ins, n);
12338                                 MONO_ADD_INS (cfg->cbb, ins);
12339                                 *sp++ = ins;
12340                                 ip += 4;
12341                                 break;
12342                         case CEE_STARG:
12343                                 CHECK_STACK (1);
12344                                 --sp;
12345                                 CHECK_OPSIZE (4);
12346                                 n = read16 (ip + 2);
12347                                 CHECK_ARG (n);
12348                                 if (!dont_verify_stloc && target_type_is_incompatible (cfg, param_types [n], *sp))
12349                                         UNVERIFIED;
12350                                 EMIT_NEW_ARGSTORE (cfg, ins, n, *sp);
12351                                 ip += 4;
12352                                 break;
12353                         case CEE_LDLOC:
12354                                 CHECK_STACK_OVF (1);
12355                                 CHECK_OPSIZE (4);
12356                                 n = read16 (ip + 2);
12357                                 CHECK_LOCAL (n);
12358                                 if ((ip [4] == CEE_LDFLD) && ip_in_bb (cfg, cfg->cbb, ip + 4) && header->locals [n]->type == MONO_TYPE_VALUETYPE) {
12359                                         /* Avoid loading a struct just to load one of its fields */
12360                                         EMIT_NEW_LOCLOADA (cfg, ins, n);
12361                                 } else {
12362                                         EMIT_NEW_LOCLOAD (cfg, ins, n);
12363                                 }
12364                                 *sp++ = ins;
12365                                 ip += 4;
12366                                 break;
12367                         case CEE_LDLOCA: {
12368                                 unsigned char *tmp_ip;
12369                                 CHECK_STACK_OVF (1);
12370                                 CHECK_OPSIZE (4);
12371                                 n = read16 (ip + 2);
12372                                 CHECK_LOCAL (n);
12373
12374                                 if ((tmp_ip = emit_optimized_ldloca_ir (cfg, ip, end, 2))) {
12375                                         ip = tmp_ip;
12376                                         inline_costs += 1;
12377                                         break;
12378                                 }
12379
12380                                 EMIT_NEW_LOCLOADA (cfg, ins, n);
12381                                 *sp++ = ins;
12382                                 ip += 4;
12383                                 break;
12384                         }
12385                         case CEE_STLOC:
12386                                 CHECK_STACK (1);
12387                                 --sp;
12388                                 CHECK_OPSIZE (4);
12389                                 n = read16 (ip + 2);
12390                                 CHECK_LOCAL (n);
12391                                 if (!dont_verify_stloc && target_type_is_incompatible (cfg, header->locals [n], *sp))
12392                                         UNVERIFIED;
12393                                 emit_stloc_ir (cfg, sp, header, n);
12394                                 ip += 4;
12395                                 inline_costs += 1;
12396                                 break;
12397                         case CEE_LOCALLOC: {
12398                                 CHECK_STACK (1);
12399                                 MonoBasicBlock *non_zero_bb, *end_bb;
12400                                 int alloc_ptr = alloc_preg (cfg);
12401                                 --sp;
12402                                 if (sp != stack_start)
12403                                         UNVERIFIED;
12404                                 if (cfg->method != method)
12405                                         /*
12406                                          * Inlining this into a loop in a parent could lead to
12407                                          * stack overflows which is different behavior than the
12408                                          * non-inlined case, thus disable inlining in this case.
12409                                          */
12410                                         INLINE_FAILURE("localloc");
12411
12412                                 NEW_BBLOCK (cfg, non_zero_bb);
12413                                 NEW_BBLOCK (cfg, end_bb);
12414
12415                                 /* if size != zero */
12416                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, sp [0]->dreg, 0);
12417                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBNE_UN, non_zero_bb);
12418
12419                                 //size is zero, so result is NULL
12420                                 MONO_EMIT_NEW_PCONST (cfg, alloc_ptr, NULL);
12421                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
12422
12423                                 MONO_START_BB (cfg, non_zero_bb);
12424                                 MONO_INST_NEW (cfg, ins, OP_LOCALLOC);
12425                                 ins->dreg = alloc_ptr;
12426                                 ins->sreg1 = sp [0]->dreg;
12427                                 ins->type = STACK_PTR;
12428                                 MONO_ADD_INS (cfg->cbb, ins);
12429
12430                                 cfg->flags |= MONO_CFG_HAS_ALLOCA;
12431                                 if (init_locals)
12432                                         ins->flags |= MONO_INST_INIT;
12433
12434                                 MONO_START_BB (cfg, end_bb);
12435                                 EMIT_NEW_UNALU (cfg, ins, OP_MOVE, alloc_preg (cfg), alloc_ptr);
12436                                 ins->type = STACK_PTR;
12437
12438                                 *sp++ = ins;
12439                                 ip += 2;
12440                                 break;
12441                         }
12442                         case CEE_ENDFILTER: {
12443                                 MonoExceptionClause *clause, *nearest;
12444                                 int cc;
12445
12446                                 CHECK_STACK (1);
12447                                 --sp;
12448                                 if ((sp != stack_start) || (sp [0]->type != STACK_I4))
12449                                         UNVERIFIED;
12450                                 MONO_INST_NEW (cfg, ins, OP_ENDFILTER);
12451                                 ins->sreg1 = (*sp)->dreg;
12452                                 MONO_ADD_INS (cfg->cbb, ins);
12453                                 start_new_bblock = 1;
12454                                 ip += 2;
12455
12456                                 nearest = NULL;
12457                                 for (cc = 0; cc < header->num_clauses; ++cc) {
12458                                         clause = &header->clauses [cc];
12459                                         if ((clause->flags & MONO_EXCEPTION_CLAUSE_FILTER) &&
12460                                                 ((ip - header->code) > clause->data.filter_offset && (ip - header->code) <= clause->handler_offset) &&
12461                                             (!nearest || (clause->data.filter_offset < nearest->data.filter_offset)))
12462                                                 nearest = clause;
12463                                 }
12464                                 g_assert (nearest);
12465                                 if ((ip - header->code) != nearest->handler_offset)
12466                                         UNVERIFIED;
12467
12468                                 break;
12469                         }
12470                         case CEE_UNALIGNED_:
12471                                 ins_flag |= MONO_INST_UNALIGNED;
12472                                 /* FIXME: record alignment? we can assume 1 for now */
12473                                 CHECK_OPSIZE (3);
12474                                 ip += 3;
12475                                 break;
12476                         case CEE_VOLATILE_:
12477                                 ins_flag |= MONO_INST_VOLATILE;
12478                                 ip += 2;
12479                                 break;
12480                         case CEE_TAIL_:
12481                                 ins_flag   |= MONO_INST_TAILCALL;
12482                                 cfg->flags |= MONO_CFG_HAS_TAIL;
12483                                 /* Can't inline tail calls at this time */
12484                                 inline_costs += 100000;
12485                                 ip += 2;
12486                                 break;
12487                         case CEE_INITOBJ:
12488                                 CHECK_STACK (1);
12489                                 --sp;
12490                                 CHECK_OPSIZE (6);
12491                                 token = read32 (ip + 2);
12492                                 klass = mini_get_class (method, token, generic_context);
12493                                 CHECK_TYPELOAD (klass);
12494                                 if (generic_class_is_reference_type (cfg, klass))
12495                                         MONO_EMIT_NEW_STORE_MEMBASE_IMM (cfg, OP_STORE_MEMBASE_IMM, sp [0]->dreg, 0, 0);
12496                                 else
12497                                         mini_emit_initobj (cfg, *sp, NULL, klass);
12498                                 ip += 6;
12499                                 inline_costs += 1;
12500                                 break;
12501                         case CEE_CONSTRAINED_:
12502                                 CHECK_OPSIZE (6);
12503                                 token = read32 (ip + 2);
12504                                 constrained_class = mini_get_class (method, token, generic_context);
12505                                 CHECK_TYPELOAD (constrained_class);
12506                                 ip += 6;
12507                                 break;
12508                         case CEE_CPBLK:
12509                                 CHECK_STACK (3);
12510                                 sp -= 3;
12511                                 mini_emit_memory_copy_bytes (cfg, sp [0], sp [1], sp [2], ins_flag);
12512                                 ip += 2;
12513                                 ins_flag = 0;
12514                                 inline_costs += 1;
12515                                 break;
12516                         case CEE_INITBLK:
12517                                 CHECK_STACK (3);
12518                                 sp -= 3;
12519                                 mini_emit_memory_init_bytes (cfg, sp [0], sp [1], sp [2], ins_flag);
12520                                 ip += 2;
12521                                 ins_flag = 0;
12522                                 inline_costs += 1;
12523                                 break;
12524                         case CEE_NO_:
12525                                 CHECK_OPSIZE (3);
12526                                 if (ip [2] & 0x1)
12527                                         ins_flag |= MONO_INST_NOTYPECHECK;
12528                                 if (ip [2] & 0x2)
12529                                         ins_flag |= MONO_INST_NORANGECHECK;
12530                                 /* we ignore the no-nullcheck for now since we
12531                                  * really do it explicitly only when doing callvirt->call
12532                                  */
12533                                 ip += 3;
12534                                 break;
12535                         case CEE_RETHROW: {
12536                                 MonoInst *load;
12537                                 int handler_offset = -1;
12538
12539                                 for (i = 0; i < header->num_clauses; ++i) {
12540                                         MonoExceptionClause *clause = &header->clauses [i];
12541                                         if (MONO_OFFSET_IN_HANDLER (clause, ip - header->code) && !(clause->flags & MONO_EXCEPTION_CLAUSE_FINALLY)) {
12542                                                 handler_offset = clause->handler_offset;
12543                                                 break;
12544                                         }
12545                                 }
12546
12547                                 cfg->cbb->flags |= BB_EXCEPTION_UNSAFE;
12548
12549                                 if (handler_offset == -1)
12550                                         UNVERIFIED;
12551
12552                                 EMIT_NEW_TEMPLOAD (cfg, load, mono_find_exvar_for_offset (cfg, handler_offset)->inst_c0);
12553                                 MONO_INST_NEW (cfg, ins, OP_RETHROW);
12554                                 ins->sreg1 = load->dreg;
12555                                 MONO_ADD_INS (cfg->cbb, ins);
12556
12557                                 MONO_INST_NEW (cfg, ins, OP_NOT_REACHED);
12558                                 MONO_ADD_INS (cfg->cbb, ins);
12559
12560                                 sp = stack_start;
12561                                 link_bblock (cfg, cfg->cbb, end_bblock);
12562                                 start_new_bblock = 1;
12563                                 ip += 2;
12564                                 break;
12565                         }
12566                         case CEE_SIZEOF: {
12567                                 guint32 val;
12568                                 int ialign;
12569
12570                                 CHECK_STACK_OVF (1);
12571                                 CHECK_OPSIZE (6);
12572                                 token = read32 (ip + 2);
12573                                 if (mono_metadata_token_table (token) == MONO_TABLE_TYPESPEC && !image_is_dynamic (method->klass->image) && !generic_context) {
12574                                         MonoType *type = mono_type_create_from_typespec_checked (image, token, &cfg->error);
12575                                         CHECK_CFG_ERROR;
12576
12577                                         val = mono_type_size (type, &ialign);
12578                                 } else {
12579                                         MonoClass *klass = mini_get_class (method, token, generic_context);
12580                                         CHECK_TYPELOAD (klass);
12581
12582                                         val = mono_type_size (&klass->byval_arg, &ialign);
12583
12584                                         if (mini_is_gsharedvt_klass (klass))
12585                                                 GSHAREDVT_FAILURE (*ip);
12586                                 }
12587                                 EMIT_NEW_ICONST (cfg, ins, val);
12588                                 *sp++= ins;
12589                                 ip += 6;
12590                                 break;
12591                         }
12592                         case CEE_REFANYTYPE: {
12593                                 MonoInst *src_var, *src;
12594
12595                                 GSHAREDVT_FAILURE (*ip);
12596
12597                                 CHECK_STACK (1);
12598                                 --sp;
12599
12600                                 // FIXME:
12601                                 src_var = get_vreg_to_inst (cfg, sp [0]->dreg);
12602                                 if (!src_var)
12603                                         src_var = mono_compile_create_var_for_vreg (cfg, &mono_defaults.typed_reference_class->byval_arg, OP_LOCAL, sp [0]->dreg);
12604                                 EMIT_NEW_VARLOADA (cfg, src, src_var, src_var->inst_vtype);
12605                                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &mono_defaults.typehandle_class->byval_arg, src->dreg, MONO_STRUCT_OFFSET (MonoTypedRef, type));
12606                                 *sp++ = ins;
12607                                 ip += 2;
12608                                 break;
12609                         }
12610                         case CEE_READONLY_:
12611                                 readonly = TRUE;
12612                                 ip += 2;
12613                                 break;
12614
12615                         case CEE_UNUSED56:
12616                         case CEE_UNUSED57:
12617                         case CEE_UNUSED70:
12618                         case CEE_UNUSED:
12619                         case CEE_UNUSED99:
12620                                 UNVERIFIED;
12621
12622                         default:
12623                                 g_warning ("opcode 0xfe 0x%02x not handled", ip [1]);
12624                                 UNVERIFIED;
12625                         }
12626                         break;
12627                 }
12628                 case CEE_UNUSED58:
12629                 case CEE_UNUSED1:
12630                         UNVERIFIED;
12631
12632                 default:
12633                         g_warning ("opcode 0x%02x not handled", *ip);
12634                         UNVERIFIED;
12635                 }
12636         }
12637         if (start_new_bblock != 1)
12638                 UNVERIFIED;
12639
12640         cfg->cbb->cil_length = ip - cfg->cbb->cil_code;
12641         if (cfg->cbb->next_bb) {
12642                 /* This could already be set because of inlining, #693905 */
12643                 MonoBasicBlock *bb = cfg->cbb;
12644
12645                 while (bb->next_bb)
12646                         bb = bb->next_bb;
12647                 bb->next_bb = end_bblock;
12648         } else {
12649                 cfg->cbb->next_bb = end_bblock;
12650         }
12651
12652         if (cfg->method == method && cfg->domainvar) {
12653                 MonoInst *store;
12654                 MonoInst *get_domain;
12655
12656                 cfg->cbb = init_localsbb;
12657
12658                 get_domain = mono_create_tls_get (cfg, TLS_KEY_DOMAIN);
12659                 NEW_TEMPSTORE (cfg, store, cfg->domainvar->inst_c0, get_domain);
12660                 MONO_ADD_INS (cfg->cbb, store);
12661         }
12662
12663 #if defined(TARGET_POWERPC) || defined(TARGET_X86)
12664         if (cfg->compile_aot)
12665                 /* FIXME: The plt slots require a GOT var even if the method doesn't use it */
12666                 mono_get_got_var (cfg);
12667 #endif
12668
12669         if (cfg->method == method && cfg->got_var)
12670                 mono_emit_load_got_addr (cfg);
12671
12672         if (init_localsbb) {
12673                 cfg->cbb = init_localsbb;
12674                 cfg->ip = NULL;
12675                 for (i = 0; i < header->num_locals; ++i) {
12676                         emit_init_local (cfg, i, header->locals [i], init_locals);
12677                 }
12678         }
12679
12680         if (cfg->init_ref_vars && cfg->method == method) {
12681                 /* Emit initialization for ref vars */
12682                 // FIXME: Avoid duplication initialization for IL locals.
12683                 for (i = 0; i < cfg->num_varinfo; ++i) {
12684                         MonoInst *ins = cfg->varinfo [i];
12685
12686                         if (ins->opcode == OP_LOCAL && ins->type == STACK_OBJ)
12687                                 MONO_EMIT_NEW_PCONST (cfg, ins->dreg, NULL);
12688                 }
12689         }
12690
12691         if (cfg->lmf_var && cfg->method == method && !cfg->llvm_only) {
12692                 cfg->cbb = init_localsbb;
12693                 emit_push_lmf (cfg);
12694         }
12695
12696         cfg->cbb = init_localsbb;
12697         mini_profiler_emit_enter (cfg);
12698
12699         if (seq_points) {
12700                 MonoBasicBlock *bb;
12701
12702                 /*
12703                  * Make seq points at backward branch targets interruptable.
12704                  */
12705                 for (bb = cfg->bb_entry; bb; bb = bb->next_bb)
12706                         if (bb->code && bb->in_count > 1 && bb->code->opcode == OP_SEQ_POINT)
12707                                 bb->code->flags |= MONO_INST_SINGLE_STEP_LOC;
12708         }
12709
12710         /* Add a sequence point for method entry/exit events */
12711         if (seq_points && cfg->gen_sdb_seq_points) {
12712                 NEW_SEQ_POINT (cfg, ins, METHOD_ENTRY_IL_OFFSET, FALSE);
12713                 MONO_ADD_INS (init_localsbb, ins);
12714                 NEW_SEQ_POINT (cfg, ins, METHOD_EXIT_IL_OFFSET, FALSE);
12715                 MONO_ADD_INS (cfg->bb_exit, ins);
12716         }
12717
12718         /*
12719          * Add seq points for IL offsets which have line number info, but wasn't generated a seq point during JITting because
12720          * the code they refer to was dead (#11880).
12721          */
12722         if (sym_seq_points) {
12723                 for (i = 0; i < header->code_size; ++i) {
12724                         if (mono_bitset_test_fast (seq_point_locs, i) && !mono_bitset_test_fast (seq_point_set_locs, i)) {
12725                                 MonoInst *ins;
12726
12727                                 NEW_SEQ_POINT (cfg, ins, i, FALSE);
12728                                 mono_add_seq_point (cfg, NULL, ins, SEQ_POINT_NATIVE_OFFSET_DEAD_CODE);
12729                         }
12730                 }
12731         }
12732
12733         cfg->ip = NULL;
12734
12735         if (cfg->method == method) {
12736                 MonoBasicBlock *bb;
12737                 for (bb = cfg->bb_entry; bb; bb = bb->next_bb) {
12738                         if (bb == cfg->bb_init)
12739                                 bb->region = -1;
12740                         else
12741                                 bb->region = mono_find_block_region (cfg, bb->real_offset);
12742                         if (cfg->spvars)
12743                                 mono_create_spvar_for_region (cfg, bb->region);
12744                         if (cfg->verbose_level > 2)
12745                                 printf ("REGION BB%d IL_%04x ID_%08X\n", bb->block_num, bb->real_offset, bb->region);
12746                 }
12747         } else {
12748                 MonoBasicBlock *bb;
12749                 /* get_most_deep_clause () in mini-llvm.c depends on this for inlined bblocks */
12750                 for (bb = start_bblock; bb != end_bblock; bb  = bb->next_bb) {
12751                         bb->real_offset = inline_offset;
12752                 }
12753         }
12754
12755         if (inline_costs < 0) {
12756                 char *mname;
12757
12758                 /* Method is too large */
12759                 mname = mono_method_full_name (method, TRUE);
12760                 mono_cfg_set_exception_invalid_program (cfg, g_strdup_printf ("Method %s is too complex.", mname));
12761                 g_free (mname);
12762         }
12763
12764         if ((cfg->verbose_level > 2) && (cfg->method == method))
12765                 mono_print_code (cfg, "AFTER METHOD-TO-IR");
12766
12767         goto cleanup;
12768
12769 mono_error_exit:
12770         g_assert (!mono_error_ok (&cfg->error));
12771         goto cleanup;
12772
12773  exception_exit:
12774         g_assert (cfg->exception_type != MONO_EXCEPTION_NONE);
12775         goto cleanup;
12776
12777  unverified:
12778         set_exception_type_from_invalid_il (cfg, method, ip);
12779         goto cleanup;
12780
12781  cleanup:
12782         g_slist_free (class_inits);
12783         mono_basic_block_free (original_bb);
12784         cfg->dont_inline = g_list_remove (cfg->dont_inline, method);
12785         if (cfg->exception_type)
12786                 return -1;
12787         else
12788                 return inline_costs;
12789 }
12790
12791 static int
12792 store_membase_reg_to_store_membase_imm (int opcode)
12793 {
12794         switch (opcode) {
12795         case OP_STORE_MEMBASE_REG:
12796                 return OP_STORE_MEMBASE_IMM;
12797         case OP_STOREI1_MEMBASE_REG:
12798                 return OP_STOREI1_MEMBASE_IMM;
12799         case OP_STOREI2_MEMBASE_REG:
12800                 return OP_STOREI2_MEMBASE_IMM;
12801         case OP_STOREI4_MEMBASE_REG:
12802                 return OP_STOREI4_MEMBASE_IMM;
12803         case OP_STOREI8_MEMBASE_REG:
12804                 return OP_STOREI8_MEMBASE_IMM;
12805         default:
12806                 g_assert_not_reached ();
12807         }
12808
12809         return -1;
12810 }
12811
12812 int
12813 mono_op_to_op_imm (int opcode)
12814 {
12815         switch (opcode) {
12816         case OP_IADD:
12817                 return OP_IADD_IMM;
12818         case OP_ISUB:
12819                 return OP_ISUB_IMM;
12820         case OP_IDIV:
12821                 return OP_IDIV_IMM;
12822         case OP_IDIV_UN:
12823                 return OP_IDIV_UN_IMM;
12824         case OP_IREM:
12825                 return OP_IREM_IMM;
12826         case OP_IREM_UN:
12827                 return OP_IREM_UN_IMM;
12828         case OP_IMUL:
12829                 return OP_IMUL_IMM;
12830         case OP_IAND:
12831                 return OP_IAND_IMM;
12832         case OP_IOR:
12833                 return OP_IOR_IMM;
12834         case OP_IXOR:
12835                 return OP_IXOR_IMM;
12836         case OP_ISHL:
12837                 return OP_ISHL_IMM;
12838         case OP_ISHR:
12839                 return OP_ISHR_IMM;
12840         case OP_ISHR_UN:
12841                 return OP_ISHR_UN_IMM;
12842
12843         case OP_LADD:
12844                 return OP_LADD_IMM;
12845         case OP_LSUB:
12846                 return OP_LSUB_IMM;
12847         case OP_LAND:
12848                 return OP_LAND_IMM;
12849         case OP_LOR:
12850                 return OP_LOR_IMM;
12851         case OP_LXOR:
12852                 return OP_LXOR_IMM;
12853         case OP_LSHL:
12854                 return OP_LSHL_IMM;
12855         case OP_LSHR:
12856                 return OP_LSHR_IMM;
12857         case OP_LSHR_UN:
12858                 return OP_LSHR_UN_IMM;
12859 #if SIZEOF_REGISTER == 8
12860         case OP_LREM:
12861                 return OP_LREM_IMM;
12862 #endif
12863
12864         case OP_COMPARE:
12865                 return OP_COMPARE_IMM;
12866         case OP_ICOMPARE:
12867                 return OP_ICOMPARE_IMM;
12868         case OP_LCOMPARE:
12869                 return OP_LCOMPARE_IMM;
12870
12871         case OP_STORE_MEMBASE_REG:
12872                 return OP_STORE_MEMBASE_IMM;
12873         case OP_STOREI1_MEMBASE_REG:
12874                 return OP_STOREI1_MEMBASE_IMM;
12875         case OP_STOREI2_MEMBASE_REG:
12876                 return OP_STOREI2_MEMBASE_IMM;
12877         case OP_STOREI4_MEMBASE_REG:
12878                 return OP_STOREI4_MEMBASE_IMM;
12879
12880 #if defined(TARGET_X86) || defined (TARGET_AMD64)
12881         case OP_X86_PUSH:
12882                 return OP_X86_PUSH_IMM;
12883         case OP_X86_COMPARE_MEMBASE_REG:
12884                 return OP_X86_COMPARE_MEMBASE_IMM;
12885 #endif
12886 #if defined(TARGET_AMD64)
12887         case OP_AMD64_ICOMPARE_MEMBASE_REG:
12888                 return OP_AMD64_ICOMPARE_MEMBASE_IMM;
12889 #endif
12890         case OP_VOIDCALL_REG:
12891                 return OP_VOIDCALL;
12892         case OP_CALL_REG:
12893                 return OP_CALL;
12894         case OP_LCALL_REG:
12895                 return OP_LCALL;
12896         case OP_FCALL_REG:
12897                 return OP_FCALL;
12898         case OP_LOCALLOC:
12899                 return OP_LOCALLOC_IMM;
12900         }
12901
12902         return -1;
12903 }
12904
12905 static int
12906 ldind_to_load_membase (int opcode)
12907 {
12908         switch (opcode) {
12909         case CEE_LDIND_I1:
12910                 return OP_LOADI1_MEMBASE;
12911         case CEE_LDIND_U1:
12912                 return OP_LOADU1_MEMBASE;
12913         case CEE_LDIND_I2:
12914                 return OP_LOADI2_MEMBASE;
12915         case CEE_LDIND_U2:
12916                 return OP_LOADU2_MEMBASE;
12917         case CEE_LDIND_I4:
12918                 return OP_LOADI4_MEMBASE;
12919         case CEE_LDIND_U4:
12920                 return OP_LOADU4_MEMBASE;
12921         case CEE_LDIND_I:
12922                 return OP_LOAD_MEMBASE;
12923         case CEE_LDIND_REF:
12924                 return OP_LOAD_MEMBASE;
12925         case CEE_LDIND_I8:
12926                 return OP_LOADI8_MEMBASE;
12927         case CEE_LDIND_R4:
12928                 return OP_LOADR4_MEMBASE;
12929         case CEE_LDIND_R8:
12930                 return OP_LOADR8_MEMBASE;
12931         default:
12932                 g_assert_not_reached ();
12933         }
12934
12935         return -1;
12936 }
12937
12938 static int
12939 stind_to_store_membase (int opcode)
12940 {
12941         switch (opcode) {
12942         case CEE_STIND_I1:
12943                 return OP_STOREI1_MEMBASE_REG;
12944         case CEE_STIND_I2:
12945                 return OP_STOREI2_MEMBASE_REG;
12946         case CEE_STIND_I4:
12947                 return OP_STOREI4_MEMBASE_REG;
12948         case CEE_STIND_I:
12949         case CEE_STIND_REF:
12950                 return OP_STORE_MEMBASE_REG;
12951         case CEE_STIND_I8:
12952                 return OP_STOREI8_MEMBASE_REG;
12953         case CEE_STIND_R4:
12954                 return OP_STORER4_MEMBASE_REG;
12955         case CEE_STIND_R8:
12956                 return OP_STORER8_MEMBASE_REG;
12957         default:
12958                 g_assert_not_reached ();
12959         }
12960
12961         return -1;
12962 }
12963
12964 int
12965 mono_load_membase_to_load_mem (int opcode)
12966 {
12967         // FIXME: Add a MONO_ARCH_HAVE_LOAD_MEM macro
12968 #if defined(TARGET_X86) || defined(TARGET_AMD64)
12969         switch (opcode) {
12970         case OP_LOAD_MEMBASE:
12971                 return OP_LOAD_MEM;
12972         case OP_LOADU1_MEMBASE:
12973                 return OP_LOADU1_MEM;
12974         case OP_LOADU2_MEMBASE:
12975                 return OP_LOADU2_MEM;
12976         case OP_LOADI4_MEMBASE:
12977                 return OP_LOADI4_MEM;
12978         case OP_LOADU4_MEMBASE:
12979                 return OP_LOADU4_MEM;
12980 #if SIZEOF_REGISTER == 8
12981         case OP_LOADI8_MEMBASE:
12982                 return OP_LOADI8_MEM;
12983 #endif
12984         }
12985 #endif
12986
12987         return -1;
12988 }
12989
12990 static inline int
12991 op_to_op_dest_membase (int store_opcode, int opcode)
12992 {
12993 #if defined(TARGET_X86)
12994         if (!((store_opcode == OP_STORE_MEMBASE_REG) || (store_opcode == OP_STOREI4_MEMBASE_REG)))
12995                 return -1;
12996
12997         switch (opcode) {
12998         case OP_IADD:
12999                 return OP_X86_ADD_MEMBASE_REG;
13000         case OP_ISUB:
13001                 return OP_X86_SUB_MEMBASE_REG;
13002         case OP_IAND:
13003                 return OP_X86_AND_MEMBASE_REG;
13004         case OP_IOR:
13005                 return OP_X86_OR_MEMBASE_REG;
13006         case OP_IXOR:
13007                 return OP_X86_XOR_MEMBASE_REG;
13008         case OP_ADD_IMM:
13009         case OP_IADD_IMM:
13010                 return OP_X86_ADD_MEMBASE_IMM;
13011         case OP_SUB_IMM:
13012         case OP_ISUB_IMM:
13013                 return OP_X86_SUB_MEMBASE_IMM;
13014         case OP_AND_IMM:
13015         case OP_IAND_IMM:
13016                 return OP_X86_AND_MEMBASE_IMM;
13017         case OP_OR_IMM:
13018         case OP_IOR_IMM:
13019                 return OP_X86_OR_MEMBASE_IMM;
13020         case OP_XOR_IMM:
13021         case OP_IXOR_IMM:
13022                 return OP_X86_XOR_MEMBASE_IMM;
13023         case OP_MOVE:
13024                 return OP_NOP;
13025         }
13026 #endif
13027
13028 #if defined(TARGET_AMD64)
13029         if (!((store_opcode == OP_STORE_MEMBASE_REG) || (store_opcode == OP_STOREI4_MEMBASE_REG) || (store_opcode == OP_STOREI8_MEMBASE_REG)))
13030                 return -1;
13031
13032         switch (opcode) {
13033         case OP_IADD:
13034                 return OP_X86_ADD_MEMBASE_REG;
13035         case OP_ISUB:
13036                 return OP_X86_SUB_MEMBASE_REG;
13037         case OP_IAND:
13038                 return OP_X86_AND_MEMBASE_REG;
13039         case OP_IOR:
13040                 return OP_X86_OR_MEMBASE_REG;
13041         case OP_IXOR:
13042                 return OP_X86_XOR_MEMBASE_REG;
13043         case OP_IADD_IMM:
13044                 return OP_X86_ADD_MEMBASE_IMM;
13045         case OP_ISUB_IMM:
13046                 return OP_X86_SUB_MEMBASE_IMM;
13047         case OP_IAND_IMM:
13048                 return OP_X86_AND_MEMBASE_IMM;
13049         case OP_IOR_IMM:
13050                 return OP_X86_OR_MEMBASE_IMM;
13051         case OP_IXOR_IMM:
13052                 return OP_X86_XOR_MEMBASE_IMM;
13053         case OP_LADD:
13054                 return OP_AMD64_ADD_MEMBASE_REG;
13055         case OP_LSUB:
13056                 return OP_AMD64_SUB_MEMBASE_REG;
13057         case OP_LAND:
13058                 return OP_AMD64_AND_MEMBASE_REG;
13059         case OP_LOR:
13060                 return OP_AMD64_OR_MEMBASE_REG;
13061         case OP_LXOR:
13062                 return OP_AMD64_XOR_MEMBASE_REG;
13063         case OP_ADD_IMM:
13064         case OP_LADD_IMM:
13065                 return OP_AMD64_ADD_MEMBASE_IMM;
13066         case OP_SUB_IMM:
13067         case OP_LSUB_IMM:
13068                 return OP_AMD64_SUB_MEMBASE_IMM;
13069         case OP_AND_IMM:
13070         case OP_LAND_IMM:
13071                 return OP_AMD64_AND_MEMBASE_IMM;
13072         case OP_OR_IMM:
13073         case OP_LOR_IMM:
13074                 return OP_AMD64_OR_MEMBASE_IMM;
13075         case OP_XOR_IMM:
13076         case OP_LXOR_IMM:
13077                 return OP_AMD64_XOR_MEMBASE_IMM;
13078         case OP_MOVE:
13079                 return OP_NOP;
13080         }
13081 #endif
13082
13083         return -1;
13084 }
13085
13086 static inline int
13087 op_to_op_store_membase (int store_opcode, int opcode)
13088 {
13089 #if defined(TARGET_X86) || defined(TARGET_AMD64)
13090         switch (opcode) {
13091         case OP_ICEQ:
13092                 if (store_opcode == OP_STOREI1_MEMBASE_REG)
13093                         return OP_X86_SETEQ_MEMBASE;
13094         case OP_CNE:
13095                 if (store_opcode == OP_STOREI1_MEMBASE_REG)
13096                         return OP_X86_SETNE_MEMBASE;
13097         }
13098 #endif
13099
13100         return -1;
13101 }
13102
13103 static inline int
13104 op_to_op_src1_membase (MonoCompile *cfg, int load_opcode, int opcode)
13105 {
13106 #ifdef TARGET_X86
13107         /* FIXME: This has sign extension issues */
13108         /*
13109         if ((opcode == OP_ICOMPARE_IMM) && (load_opcode == OP_LOADU1_MEMBASE))
13110                 return OP_X86_COMPARE_MEMBASE8_IMM;
13111         */
13112
13113         if (!((load_opcode == OP_LOAD_MEMBASE) || (load_opcode == OP_LOADI4_MEMBASE) || (load_opcode == OP_LOADU4_MEMBASE)))
13114                 return -1;
13115
13116         switch (opcode) {
13117         case OP_X86_PUSH:
13118                 return OP_X86_PUSH_MEMBASE;
13119         case OP_COMPARE_IMM:
13120         case OP_ICOMPARE_IMM:
13121                 return OP_X86_COMPARE_MEMBASE_IMM;
13122         case OP_COMPARE:
13123         case OP_ICOMPARE:
13124                 return OP_X86_COMPARE_MEMBASE_REG;
13125         }
13126 #endif
13127
13128 #ifdef TARGET_AMD64
13129         /* FIXME: This has sign extension issues */
13130         /*
13131         if ((opcode == OP_ICOMPARE_IMM) && (load_opcode == OP_LOADU1_MEMBASE))
13132                 return OP_X86_COMPARE_MEMBASE8_IMM;
13133         */
13134
13135         switch (opcode) {
13136         case OP_X86_PUSH:
13137                 if ((load_opcode == OP_LOAD_MEMBASE && !cfg->backend->ilp32) || (load_opcode == OP_LOADI8_MEMBASE))
13138                         return OP_X86_PUSH_MEMBASE;
13139                 break;
13140                 /* FIXME: This only works for 32 bit immediates
13141         case OP_COMPARE_IMM:
13142         case OP_LCOMPARE_IMM:
13143                 if ((load_opcode == OP_LOAD_MEMBASE) || (load_opcode == OP_LOADI8_MEMBASE))
13144                         return OP_AMD64_COMPARE_MEMBASE_IMM;
13145                 */
13146         case OP_ICOMPARE_IMM:
13147                 if ((load_opcode == OP_LOADI4_MEMBASE) || (load_opcode == OP_LOADU4_MEMBASE))
13148                         return OP_AMD64_ICOMPARE_MEMBASE_IMM;
13149                 break;
13150         case OP_COMPARE:
13151         case OP_LCOMPARE:
13152                 if (cfg->backend->ilp32 && load_opcode == OP_LOAD_MEMBASE)
13153                         return OP_AMD64_ICOMPARE_MEMBASE_REG;
13154                 if ((load_opcode == OP_LOAD_MEMBASE && !cfg->backend->ilp32) || (load_opcode == OP_LOADI8_MEMBASE))
13155                         return OP_AMD64_COMPARE_MEMBASE_REG;
13156                 break;
13157         case OP_ICOMPARE:
13158                 if ((load_opcode == OP_LOADI4_MEMBASE) || (load_opcode == OP_LOADU4_MEMBASE))
13159                         return OP_AMD64_ICOMPARE_MEMBASE_REG;
13160                 break;
13161         }
13162 #endif
13163
13164         return -1;
13165 }
13166
13167 static inline int
13168 op_to_op_src2_membase (MonoCompile *cfg, int load_opcode, int opcode)
13169 {
13170 #ifdef TARGET_X86
13171         if (!((load_opcode == OP_LOAD_MEMBASE) || (load_opcode == OP_LOADI4_MEMBASE) || (load_opcode == OP_LOADU4_MEMBASE)))
13172                 return -1;
13173
13174         switch (opcode) {
13175         case OP_COMPARE:
13176         case OP_ICOMPARE:
13177                 return OP_X86_COMPARE_REG_MEMBASE;
13178         case OP_IADD:
13179                 return OP_X86_ADD_REG_MEMBASE;
13180         case OP_ISUB:
13181                 return OP_X86_SUB_REG_MEMBASE;
13182         case OP_IAND:
13183                 return OP_X86_AND_REG_MEMBASE;
13184         case OP_IOR:
13185                 return OP_X86_OR_REG_MEMBASE;
13186         case OP_IXOR:
13187                 return OP_X86_XOR_REG_MEMBASE;
13188         }
13189 #endif
13190
13191 #ifdef TARGET_AMD64
13192         if ((load_opcode == OP_LOADI4_MEMBASE) || (load_opcode == OP_LOADU4_MEMBASE) || (load_opcode == OP_LOAD_MEMBASE && cfg->backend->ilp32)) {
13193                 switch (opcode) {
13194                 case OP_ICOMPARE:
13195                         return OP_AMD64_ICOMPARE_REG_MEMBASE;
13196                 case OP_IADD:
13197                         return OP_X86_ADD_REG_MEMBASE;
13198                 case OP_ISUB:
13199                         return OP_X86_SUB_REG_MEMBASE;
13200                 case OP_IAND:
13201                         return OP_X86_AND_REG_MEMBASE;
13202                 case OP_IOR:
13203                         return OP_X86_OR_REG_MEMBASE;
13204                 case OP_IXOR:
13205                         return OP_X86_XOR_REG_MEMBASE;
13206                 }
13207         } else if ((load_opcode == OP_LOADI8_MEMBASE) || (load_opcode == OP_LOAD_MEMBASE && !cfg->backend->ilp32)) {
13208                 switch (opcode) {
13209                 case OP_COMPARE:
13210                 case OP_LCOMPARE:
13211                         return OP_AMD64_COMPARE_REG_MEMBASE;
13212                 case OP_LADD:
13213                         return OP_AMD64_ADD_REG_MEMBASE;
13214                 case OP_LSUB:
13215                         return OP_AMD64_SUB_REG_MEMBASE;
13216                 case OP_LAND:
13217                         return OP_AMD64_AND_REG_MEMBASE;
13218                 case OP_LOR:
13219                         return OP_AMD64_OR_REG_MEMBASE;
13220                 case OP_LXOR:
13221                         return OP_AMD64_XOR_REG_MEMBASE;
13222                 }
13223         }
13224 #endif
13225
13226         return -1;
13227 }
13228
13229 int
13230 mono_op_to_op_imm_noemul (int opcode)
13231 {
13232         switch (opcode) {
13233 #if SIZEOF_REGISTER == 4 && !defined(MONO_ARCH_NO_EMULATE_LONG_SHIFT_OPS)
13234         case OP_LSHR:
13235         case OP_LSHL:
13236         case OP_LSHR_UN:
13237                 return -1;
13238 #endif
13239 #if defined(MONO_ARCH_EMULATE_MUL_DIV) || defined(MONO_ARCH_EMULATE_DIV)
13240         case OP_IDIV:
13241         case OP_IDIV_UN:
13242         case OP_IREM:
13243         case OP_IREM_UN:
13244                 return -1;
13245 #endif
13246 #if defined(MONO_ARCH_EMULATE_MUL_DIV)
13247         case OP_IMUL:
13248                 return -1;
13249 #endif
13250         default:
13251                 return mono_op_to_op_imm (opcode);
13252         }
13253 }
13254
13255 /**
13256  * mono_handle_global_vregs:
13257  *
13258  *   Make vregs used in more than one bblock 'global', i.e. allocate a variable
13259  * for them.
13260  */
13261 void
13262 mono_handle_global_vregs (MonoCompile *cfg)
13263 {
13264         gint32 *vreg_to_bb;
13265         MonoBasicBlock *bb;
13266         int i, pos;
13267
13268         vreg_to_bb = (gint32 *)mono_mempool_alloc0 (cfg->mempool, sizeof (gint32*) * cfg->next_vreg + 1);
13269
13270 #ifdef MONO_ARCH_SIMD_INTRINSICS
13271         if (cfg->uses_simd_intrinsics)
13272                 mono_simd_simplify_indirection (cfg);
13273 #endif
13274
13275         /* Find local vregs used in more than one bb */
13276         for (bb = cfg->bb_entry; bb; bb = bb->next_bb) {
13277                 MonoInst *ins = bb->code;
13278                 int block_num = bb->block_num;
13279
13280                 if (cfg->verbose_level > 2)
13281                         printf ("\nHANDLE-GLOBAL-VREGS BLOCK %d:\n", bb->block_num);
13282
13283                 cfg->cbb = bb;
13284                 for (; ins; ins = ins->next) {
13285                         const char *spec = INS_INFO (ins->opcode);
13286                         int regtype = 0, regindex;
13287                         gint32 prev_bb;
13288
13289                         if (G_UNLIKELY (cfg->verbose_level > 2))
13290                                 mono_print_ins (ins);
13291
13292                         g_assert (ins->opcode >= MONO_CEE_LAST);
13293
13294                         for (regindex = 0; regindex < 4; regindex ++) {
13295                                 int vreg = 0;
13296
13297                                 if (regindex == 0) {
13298                                         regtype = spec [MONO_INST_DEST];
13299                                         if (regtype == ' ')
13300                                                 continue;
13301                                         vreg = ins->dreg;
13302                                 } else if (regindex == 1) {
13303                                         regtype = spec [MONO_INST_SRC1];
13304                                         if (regtype == ' ')
13305                                                 continue;
13306                                         vreg = ins->sreg1;
13307                                 } else if (regindex == 2) {
13308                                         regtype = spec [MONO_INST_SRC2];
13309                                         if (regtype == ' ')
13310                                                 continue;
13311                                         vreg = ins->sreg2;
13312                                 } else if (regindex == 3) {
13313                                         regtype = spec [MONO_INST_SRC3];
13314                                         if (regtype == ' ')
13315                                                 continue;
13316                                         vreg = ins->sreg3;
13317                                 }
13318
13319 #if SIZEOF_REGISTER == 4
13320                                 /* In the LLVM case, the long opcodes are not decomposed */
13321                                 if (regtype == 'l' && !COMPILE_LLVM (cfg)) {
13322                                         /*
13323                                          * Since some instructions reference the original long vreg,
13324                                          * and some reference the two component vregs, it is quite hard
13325                                          * to determine when it needs to be global. So be conservative.
13326                                          */
13327                                         if (!get_vreg_to_inst (cfg, vreg)) {
13328                                                 mono_compile_create_var_for_vreg (cfg, &mono_defaults.int64_class->byval_arg, OP_LOCAL, vreg);
13329
13330                                                 if (cfg->verbose_level > 2)
13331                                                         printf ("LONG VREG R%d made global.\n", vreg);
13332                                         }
13333
13334                                         /*
13335                                          * Make the component vregs volatile since the optimizations can
13336                                          * get confused otherwise.
13337                                          */
13338                                         get_vreg_to_inst (cfg, MONO_LVREG_LS (vreg))->flags |= MONO_INST_VOLATILE;
13339                                         get_vreg_to_inst (cfg, MONO_LVREG_MS (vreg))->flags |= MONO_INST_VOLATILE;
13340                                 }
13341 #endif
13342
13343                                 g_assert (vreg != -1);
13344
13345                                 prev_bb = vreg_to_bb [vreg];
13346                                 if (prev_bb == 0) {
13347                                         /* 0 is a valid block num */
13348                                         vreg_to_bb [vreg] = block_num + 1;
13349                                 } else if ((prev_bb != block_num + 1) && (prev_bb != -1)) {
13350                                         if (((regtype == 'i' && (vreg < MONO_MAX_IREGS))) || (regtype == 'f' && (vreg < MONO_MAX_FREGS)))
13351                                                 continue;
13352
13353                                         if (!get_vreg_to_inst (cfg, vreg)) {
13354                                                 if (G_UNLIKELY (cfg->verbose_level > 2))
13355                                                         printf ("VREG R%d used in BB%d and BB%d made global.\n", vreg, vreg_to_bb [vreg], block_num);
13356
13357                                                 switch (regtype) {
13358                                                 case 'i':
13359                                                         if (vreg_is_ref (cfg, vreg))
13360                                                                 mono_compile_create_var_for_vreg (cfg, &mono_defaults.object_class->byval_arg, OP_LOCAL, vreg);
13361                                                         else
13362                                                                 mono_compile_create_var_for_vreg (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL, vreg);
13363                                                         break;
13364                                                 case 'l':
13365                                                         mono_compile_create_var_for_vreg (cfg, &mono_defaults.int64_class->byval_arg, OP_LOCAL, vreg);
13366                                                         break;
13367                                                 case 'f':
13368                                                         mono_compile_create_var_for_vreg (cfg, &mono_defaults.double_class->byval_arg, OP_LOCAL, vreg);
13369                                                         break;
13370                                                 case 'v':
13371                                                 case 'x':
13372                                                         mono_compile_create_var_for_vreg (cfg, &ins->klass->byval_arg, OP_LOCAL, vreg);
13373                                                         break;
13374                                                 default:
13375                                                         g_assert_not_reached ();
13376                                                 }
13377                                         }
13378
13379                                         /* Flag as having been used in more than one bb */
13380                                         vreg_to_bb [vreg] = -1;
13381                                 }
13382                         }
13383                 }
13384         }
13385
13386         /* If a variable is used in only one bblock, convert it into a local vreg */
13387         for (i = 0; i < cfg->num_varinfo; i++) {
13388                 MonoInst *var = cfg->varinfo [i];
13389                 MonoMethodVar *vmv = MONO_VARINFO (cfg, i);
13390
13391                 switch (var->type) {
13392                 case STACK_I4:
13393                 case STACK_OBJ:
13394                 case STACK_PTR:
13395                 case STACK_MP:
13396                 case STACK_VTYPE:
13397 #if SIZEOF_REGISTER == 8
13398                 case STACK_I8:
13399 #endif
13400 #if !defined(TARGET_X86)
13401                 /* Enabling this screws up the fp stack on x86 */
13402                 case STACK_R8:
13403 #endif
13404                         if (mono_arch_is_soft_float ())
13405                                 break;
13406
13407                         /*
13408                         if (var->type == STACK_VTYPE && cfg->gsharedvt && mini_is_gsharedvt_variable_type (var->inst_vtype))
13409                                 break;
13410                         */
13411
13412                         /* Arguments are implicitly global */
13413                         /* Putting R4 vars into registers doesn't work currently */
13414                         /* The gsharedvt vars are implicitly referenced by ldaddr opcodes, but those opcodes are only generated later */
13415                         if ((var->opcode != OP_ARG) && (var != cfg->ret) && !(var->flags & (MONO_INST_VOLATILE|MONO_INST_INDIRECT)) && (vreg_to_bb [var->dreg] != -1) && (var->klass->byval_arg.type != MONO_TYPE_R4) && !cfg->disable_vreg_to_lvreg && var != cfg->gsharedvt_info_var && var != cfg->gsharedvt_locals_var && var != cfg->lmf_addr_var) {
13416                                 /*
13417                                  * Make that the variable's liveness interval doesn't contain a call, since
13418                                  * that would cause the lvreg to be spilled, making the whole optimization
13419                                  * useless.
13420                                  */
13421                                 /* This is too slow for JIT compilation */
13422 #if 0
13423                                 if (cfg->compile_aot && vreg_to_bb [var->dreg]) {
13424                                         MonoInst *ins;
13425                                         int def_index, call_index, ins_index;
13426                                         gboolean spilled = FALSE;
13427
13428                                         def_index = -1;
13429                                         call_index = -1;
13430                                         ins_index = 0;
13431                                         for (ins = vreg_to_bb [var->dreg]->code; ins; ins = ins->next) {
13432                                                 const char *spec = INS_INFO (ins->opcode);
13433
13434                                                 if ((spec [MONO_INST_DEST] != ' ') && (ins->dreg == var->dreg))
13435                                                         def_index = ins_index;
13436
13437                                                 if (((spec [MONO_INST_SRC1] != ' ') && (ins->sreg1 == var->dreg)) ||
13438                                                         ((spec [MONO_INST_SRC1] != ' ') && (ins->sreg1 == var->dreg))) {
13439                                                         if (call_index > def_index) {
13440                                                                 spilled = TRUE;
13441                                                                 break;
13442                                                         }
13443                                                 }
13444
13445                                                 if (MONO_IS_CALL (ins))
13446                                                         call_index = ins_index;
13447
13448                                                 ins_index ++;
13449                                         }
13450
13451                                         if (spilled)
13452                                                 break;
13453                                 }
13454 #endif
13455
13456                                 if (G_UNLIKELY (cfg->verbose_level > 2))
13457                                         printf ("CONVERTED R%d(%d) TO VREG.\n", var->dreg, vmv->idx);
13458                                 var->flags |= MONO_INST_IS_DEAD;
13459                                 cfg->vreg_to_inst [var->dreg] = NULL;
13460                         }
13461                         break;
13462                 }
13463         }
13464
13465         /*
13466          * Compress the varinfo and vars tables so the liveness computation is faster and
13467          * takes up less space.
13468          */
13469         pos = 0;
13470         for (i = 0; i < cfg->num_varinfo; ++i) {
13471                 MonoInst *var = cfg->varinfo [i];
13472                 if (pos < i && cfg->locals_start == i)
13473                         cfg->locals_start = pos;
13474                 if (!(var->flags & MONO_INST_IS_DEAD)) {
13475                         if (pos < i) {
13476                                 cfg->varinfo [pos] = cfg->varinfo [i];
13477                                 cfg->varinfo [pos]->inst_c0 = pos;
13478                                 memcpy (&cfg->vars [pos], &cfg->vars [i], sizeof (MonoMethodVar));
13479                                 cfg->vars [pos].idx = pos;
13480 #if SIZEOF_REGISTER == 4
13481                                 if (cfg->varinfo [pos]->type == STACK_I8) {
13482                                         /* Modify the two component vars too */
13483                                         MonoInst *var1;
13484
13485                                         var1 = get_vreg_to_inst (cfg, MONO_LVREG_LS (cfg->varinfo [pos]->dreg));
13486                                         var1->inst_c0 = pos;
13487                                         var1 = get_vreg_to_inst (cfg, MONO_LVREG_MS (cfg->varinfo [pos]->dreg));
13488                                         var1->inst_c0 = pos;
13489                                 }
13490 #endif
13491                         }
13492                         pos ++;
13493                 }
13494         }
13495         cfg->num_varinfo = pos;
13496         if (cfg->locals_start > cfg->num_varinfo)
13497                 cfg->locals_start = cfg->num_varinfo;
13498 }
13499
13500 /*
13501  * mono_allocate_gsharedvt_vars:
13502  *
13503  *   Allocate variables with gsharedvt types to entries in the MonoGSharedVtMethodRuntimeInfo.entries array.
13504  * Initialize cfg->gsharedvt_vreg_to_idx with the mapping between vregs and indexes.
13505  */
13506 void
13507 mono_allocate_gsharedvt_vars (MonoCompile *cfg)
13508 {
13509         int i;
13510
13511         cfg->gsharedvt_vreg_to_idx = (int *)mono_mempool_alloc0 (cfg->mempool, sizeof (int) * cfg->next_vreg);
13512
13513         for (i = 0; i < cfg->num_varinfo; ++i) {
13514                 MonoInst *ins = cfg->varinfo [i];
13515                 int idx;
13516
13517                 if (mini_is_gsharedvt_variable_type (ins->inst_vtype)) {
13518                         if (i >= cfg->locals_start) {
13519                                 /* Local */
13520                                 idx = get_gsharedvt_info_slot (cfg, ins->inst_vtype, MONO_RGCTX_INFO_LOCAL_OFFSET);
13521                                 cfg->gsharedvt_vreg_to_idx [ins->dreg] = idx + 1;
13522                                 ins->opcode = OP_GSHAREDVT_LOCAL;
13523                                 ins->inst_imm = idx;
13524                         } else {
13525                                 /* Arg */
13526                                 cfg->gsharedvt_vreg_to_idx [ins->dreg] = -1;
13527                                 ins->opcode = OP_GSHAREDVT_ARG_REGOFFSET;
13528                         }
13529                 }
13530         }
13531 }
13532
13533 /**
13534  * mono_spill_global_vars:
13535  *
13536  *   Generate spill code for variables which are not allocated to registers,
13537  * and replace vregs with their allocated hregs. *need_local_opts is set to TRUE if
13538  * code is generated which could be optimized by the local optimization passes.
13539  */
13540 void
13541 mono_spill_global_vars (MonoCompile *cfg, gboolean *need_local_opts)
13542 {
13543         MonoBasicBlock *bb;
13544         char spec2 [16];
13545         int orig_next_vreg;
13546         guint32 *vreg_to_lvreg;
13547         guint32 *lvregs;
13548         guint32 i, lvregs_len, lvregs_size;
13549         gboolean dest_has_lvreg = FALSE;
13550         MonoStackType stacktypes [128];
13551         MonoInst **live_range_start, **live_range_end;
13552         MonoBasicBlock **live_range_start_bb, **live_range_end_bb;
13553
13554         *need_local_opts = FALSE;
13555
13556         memset (spec2, 0, sizeof (spec2));
13557
13558         /* FIXME: Move this function to mini.c */
13559         stacktypes ['i'] = STACK_PTR;
13560         stacktypes ['l'] = STACK_I8;
13561         stacktypes ['f'] = STACK_R8;
13562 #ifdef MONO_ARCH_SIMD_INTRINSICS
13563         stacktypes ['x'] = STACK_VTYPE;
13564 #endif
13565
13566 #if SIZEOF_REGISTER == 4
13567         /* Create MonoInsts for longs */
13568         for (i = 0; i < cfg->num_varinfo; i++) {
13569                 MonoInst *ins = cfg->varinfo [i];
13570
13571                 if ((ins->opcode != OP_REGVAR) && !(ins->flags & MONO_INST_IS_DEAD)) {
13572                         switch (ins->type) {
13573                         case STACK_R8:
13574                         case STACK_I8: {
13575                                 MonoInst *tree;
13576
13577                                 if (ins->type == STACK_R8 && !COMPILE_SOFT_FLOAT (cfg))
13578                                         break;
13579
13580                                 g_assert (ins->opcode == OP_REGOFFSET);
13581
13582                                 tree = get_vreg_to_inst (cfg, MONO_LVREG_LS (ins->dreg));
13583                                 g_assert (tree);
13584                                 tree->opcode = OP_REGOFFSET;
13585                                 tree->inst_basereg = ins->inst_basereg;
13586                                 tree->inst_offset = ins->inst_offset + MINI_LS_WORD_OFFSET;
13587
13588                                 tree = get_vreg_to_inst (cfg, MONO_LVREG_MS (ins->dreg));
13589                                 g_assert (tree);
13590                                 tree->opcode = OP_REGOFFSET;
13591                                 tree->inst_basereg = ins->inst_basereg;
13592                                 tree->inst_offset = ins->inst_offset + MINI_MS_WORD_OFFSET;
13593                                 break;
13594                         }
13595                         default:
13596                                 break;
13597                         }
13598                 }
13599         }
13600 #endif
13601
13602         if (cfg->compute_gc_maps) {
13603                 /* registers need liveness info even for !non refs */
13604                 for (i = 0; i < cfg->num_varinfo; i++) {
13605                         MonoInst *ins = cfg->varinfo [i];
13606
13607                         if (ins->opcode == OP_REGVAR)
13608                                 ins->flags |= MONO_INST_GC_TRACK;
13609                 }
13610         }
13611
13612         /* FIXME: widening and truncation */
13613
13614         /*
13615          * As an optimization, when a variable allocated to the stack is first loaded into
13616          * an lvreg, we will remember the lvreg and use it the next time instead of loading
13617          * the variable again.
13618          */
13619         orig_next_vreg = cfg->next_vreg;
13620         vreg_to_lvreg = (guint32 *)mono_mempool_alloc0 (cfg->mempool, sizeof (guint32) * cfg->next_vreg);
13621         lvregs_size = 1024;
13622         lvregs = (guint32 *)mono_mempool_alloc (cfg->mempool, sizeof (guint32) * lvregs_size);
13623         lvregs_len = 0;
13624
13625         /*
13626          * These arrays contain the first and last instructions accessing a given
13627          * variable.
13628          * Since we emit bblocks in the same order we process them here, and we
13629          * don't split live ranges, these will precisely describe the live range of
13630          * the variable, i.e. the instruction range where a valid value can be found
13631          * in the variables location.
13632          * The live range is computed using the liveness info computed by the liveness pass.
13633          * We can't use vmv->range, since that is an abstract live range, and we need
13634          * one which is instruction precise.
13635          * FIXME: Variables used in out-of-line bblocks have a hole in their live range.
13636          */
13637         /* FIXME: Only do this if debugging info is requested */
13638         live_range_start = g_new0 (MonoInst*, cfg->next_vreg);
13639         live_range_end = g_new0 (MonoInst*, cfg->next_vreg);
13640         live_range_start_bb = g_new (MonoBasicBlock*, cfg->next_vreg);
13641         live_range_end_bb = g_new (MonoBasicBlock*, cfg->next_vreg);
13642
13643         /* Add spill loads/stores */
13644         for (bb = cfg->bb_entry; bb; bb = bb->next_bb) {
13645                 MonoInst *ins;
13646
13647                 if (cfg->verbose_level > 2)
13648                         printf ("\nSPILL BLOCK %d:\n", bb->block_num);
13649
13650                 /* Clear vreg_to_lvreg array */
13651                 for (i = 0; i < lvregs_len; i++)
13652                         vreg_to_lvreg [lvregs [i]] = 0;
13653                 lvregs_len = 0;
13654
13655                 cfg->cbb = bb;
13656                 MONO_BB_FOR_EACH_INS (bb, ins) {
13657                         const char *spec = INS_INFO (ins->opcode);
13658                         int regtype, srcindex, sreg, tmp_reg, prev_dreg, num_sregs;
13659                         gboolean store, no_lvreg;
13660                         int sregs [MONO_MAX_SRC_REGS];
13661
13662                         if (G_UNLIKELY (cfg->verbose_level > 2))
13663                                 mono_print_ins (ins);
13664
13665                         if (ins->opcode == OP_NOP)
13666                                 continue;
13667
13668                         /*
13669                          * We handle LDADDR here as well, since it can only be decomposed
13670                          * when variable addresses are known.
13671                          */
13672                         if (ins->opcode == OP_LDADDR) {
13673                                 MonoInst *var = (MonoInst *)ins->inst_p0;
13674
13675                                 if (var->opcode == OP_VTARG_ADDR) {
13676                                         /* Happens on SPARC/S390 where vtypes are passed by reference */
13677                                         MonoInst *vtaddr = var->inst_left;
13678                                         if (vtaddr->opcode == OP_REGVAR) {
13679                                                 ins->opcode = OP_MOVE;
13680                                                 ins->sreg1 = vtaddr->dreg;
13681                                         }
13682                                         else if (var->inst_left->opcode == OP_REGOFFSET) {
13683                                                 ins->opcode = OP_LOAD_MEMBASE;
13684                                                 ins->inst_basereg = vtaddr->inst_basereg;
13685                                                 ins->inst_offset = vtaddr->inst_offset;
13686                                         } else
13687                                                 NOT_IMPLEMENTED;
13688                                 } else if (cfg->gsharedvt && cfg->gsharedvt_vreg_to_idx [var->dreg] < 0) {
13689                                         /* gsharedvt arg passed by ref */
13690                                         g_assert (var->opcode == OP_GSHAREDVT_ARG_REGOFFSET);
13691
13692                                         ins->opcode = OP_LOAD_MEMBASE;
13693                                         ins->inst_basereg = var->inst_basereg;
13694                                         ins->inst_offset = var->inst_offset;
13695                                 } else if (cfg->gsharedvt && cfg->gsharedvt_vreg_to_idx [var->dreg]) {
13696                                         MonoInst *load, *load2, *load3;
13697                                         int idx = cfg->gsharedvt_vreg_to_idx [var->dreg] - 1;
13698                                         int reg1, reg2, reg3;
13699                                         MonoInst *info_var = cfg->gsharedvt_info_var;
13700                                         MonoInst *locals_var = cfg->gsharedvt_locals_var;
13701
13702                                         /*
13703                                          * gsharedvt local.
13704                                          * Compute the address of the local as gsharedvt_locals_var + gsharedvt_info_var->locals_offsets [idx].
13705                                          */
13706
13707                                         g_assert (var->opcode == OP_GSHAREDVT_LOCAL);
13708
13709                                         g_assert (info_var);
13710                                         g_assert (locals_var);
13711
13712                                         /* Mark the instruction used to compute the locals var as used */
13713                                         cfg->gsharedvt_locals_var_ins = NULL;
13714
13715                                         /* Load the offset */
13716                                         if (info_var->opcode == OP_REGOFFSET) {
13717                                                 reg1 = alloc_ireg (cfg);
13718                                                 NEW_LOAD_MEMBASE (cfg, load, OP_LOAD_MEMBASE, reg1, info_var->inst_basereg, info_var->inst_offset);
13719                                         } else if (info_var->opcode == OP_REGVAR) {
13720                                                 load = NULL;
13721                                                 reg1 = info_var->dreg;
13722                                         } else {
13723                                                 g_assert_not_reached ();
13724                                         }
13725                                         reg2 = alloc_ireg (cfg);
13726                                         NEW_LOAD_MEMBASE (cfg, load2, OP_LOADI4_MEMBASE, reg2, reg1, MONO_STRUCT_OFFSET (MonoGSharedVtMethodRuntimeInfo, entries) + (idx * sizeof (gpointer)));
13727                                         /* Load the locals area address */
13728                                         reg3 = alloc_ireg (cfg);
13729                                         if (locals_var->opcode == OP_REGOFFSET) {
13730                                                 NEW_LOAD_MEMBASE (cfg, load3, OP_LOAD_MEMBASE, reg3, locals_var->inst_basereg, locals_var->inst_offset);
13731                                         } else if (locals_var->opcode == OP_REGVAR) {
13732                                                 NEW_UNALU (cfg, load3, OP_MOVE, reg3, locals_var->dreg);
13733                                         } else {
13734                                                 g_assert_not_reached ();
13735                                         }
13736                                         /* Compute the address */
13737                                         ins->opcode = OP_PADD;
13738                                         ins->sreg1 = reg3;
13739                                         ins->sreg2 = reg2;
13740
13741                                         mono_bblock_insert_before_ins (bb, ins, load3);
13742                                         mono_bblock_insert_before_ins (bb, load3, load2);
13743                                         if (load)
13744                                                 mono_bblock_insert_before_ins (bb, load2, load);
13745                                 } else {
13746                                         g_assert (var->opcode == OP_REGOFFSET);
13747
13748                                         ins->opcode = OP_ADD_IMM;
13749                                         ins->sreg1 = var->inst_basereg;
13750                                         ins->inst_imm = var->inst_offset;
13751                                 }
13752
13753                                 *need_local_opts = TRUE;
13754                                 spec = INS_INFO (ins->opcode);
13755                         }
13756
13757                         if (ins->opcode < MONO_CEE_LAST) {
13758                                 mono_print_ins (ins);
13759                                 g_assert_not_reached ();
13760                         }
13761
13762                         /*
13763                          * Store opcodes have destbasereg in the dreg, but in reality, it is an
13764                          * src register.
13765                          * FIXME:
13766                          */
13767                         if (MONO_IS_STORE_MEMBASE (ins)) {
13768                                 tmp_reg = ins->dreg;
13769                                 ins->dreg = ins->sreg2;
13770                                 ins->sreg2 = tmp_reg;
13771                                 store = TRUE;
13772
13773                                 spec2 [MONO_INST_DEST] = ' ';
13774                                 spec2 [MONO_INST_SRC1] = spec [MONO_INST_SRC1];
13775                                 spec2 [MONO_INST_SRC2] = spec [MONO_INST_DEST];
13776                                 spec2 [MONO_INST_SRC3] = ' ';
13777                                 spec = spec2;
13778                         } else if (MONO_IS_STORE_MEMINDEX (ins))
13779                                 g_assert_not_reached ();
13780                         else
13781                                 store = FALSE;
13782                         no_lvreg = FALSE;
13783
13784                         if (G_UNLIKELY (cfg->verbose_level > 2)) {
13785                                 printf ("\t %.3s %d", spec, ins->dreg);
13786                                 num_sregs = mono_inst_get_src_registers (ins, sregs);
13787                                 for (srcindex = 0; srcindex < num_sregs; ++srcindex)
13788                                         printf (" %d", sregs [srcindex]);
13789                                 printf ("\n");
13790                         }
13791
13792                         /***************/
13793                         /*    DREG     */
13794                         /***************/
13795                         regtype = spec [MONO_INST_DEST];
13796                         g_assert (((ins->dreg == -1) && (regtype == ' ')) || ((ins->dreg != -1) && (regtype != ' ')));
13797                         prev_dreg = -1;
13798
13799                         if ((ins->dreg != -1) && get_vreg_to_inst (cfg, ins->dreg)) {
13800                                 MonoInst *var = get_vreg_to_inst (cfg, ins->dreg);
13801                                 MonoInst *store_ins;
13802                                 int store_opcode;
13803                                 MonoInst *def_ins = ins;
13804                                 int dreg = ins->dreg; /* The original vreg */
13805
13806                                 store_opcode = mono_type_to_store_membase (cfg, var->inst_vtype);
13807
13808                                 if (var->opcode == OP_REGVAR) {
13809                                         ins->dreg = var->dreg;
13810                                 } else if ((ins->dreg == ins->sreg1) && (spec [MONO_INST_DEST] == 'i') && (spec [MONO_INST_SRC1] == 'i') && !vreg_to_lvreg [ins->dreg] && (op_to_op_dest_membase (store_opcode, ins->opcode) != -1)) {
13811                                         /*
13812                                          * Instead of emitting a load+store, use a _membase opcode.
13813                                          */
13814                                         g_assert (var->opcode == OP_REGOFFSET);
13815                                         if (ins->opcode == OP_MOVE) {
13816                                                 NULLIFY_INS (ins);
13817                                                 def_ins = NULL;
13818                                         } else {
13819                                                 ins->opcode = op_to_op_dest_membase (store_opcode, ins->opcode);
13820                                                 ins->inst_basereg = var->inst_basereg;
13821                                                 ins->inst_offset = var->inst_offset;
13822                                                 ins->dreg = -1;
13823                                         }
13824                                         spec = INS_INFO (ins->opcode);
13825                                 } else {
13826                                         guint32 lvreg;
13827
13828                                         g_assert (var->opcode == OP_REGOFFSET);
13829
13830                                         prev_dreg = ins->dreg;
13831
13832                                         /* Invalidate any previous lvreg for this vreg */
13833                                         vreg_to_lvreg [ins->dreg] = 0;
13834
13835                                         lvreg = 0;
13836
13837                                         if (COMPILE_SOFT_FLOAT (cfg) && store_opcode == OP_STORER8_MEMBASE_REG) {
13838                                                 regtype = 'l';
13839                                                 store_opcode = OP_STOREI8_MEMBASE_REG;
13840                                         }
13841
13842                                         ins->dreg = alloc_dreg (cfg, stacktypes [regtype]);
13843
13844 #if SIZEOF_REGISTER != 8
13845                                         if (regtype == 'l') {
13846                                                 NEW_STORE_MEMBASE (cfg, store_ins, OP_STOREI4_MEMBASE_REG, var->inst_basereg, var->inst_offset + MINI_LS_WORD_OFFSET, MONO_LVREG_LS (ins->dreg));
13847                                                 mono_bblock_insert_after_ins (bb, ins, store_ins);
13848                                                 NEW_STORE_MEMBASE (cfg, store_ins, OP_STOREI4_MEMBASE_REG, var->inst_basereg, var->inst_offset + MINI_MS_WORD_OFFSET, MONO_LVREG_MS (ins->dreg));
13849                                                 mono_bblock_insert_after_ins (bb, ins, store_ins);
13850                                                 def_ins = store_ins;
13851                                         }
13852                                         else
13853 #endif
13854                                         {
13855                                                 g_assert (store_opcode != OP_STOREV_MEMBASE);
13856
13857                                                 /* Try to fuse the store into the instruction itself */
13858                                                 /* FIXME: Add more instructions */
13859                                                 if (!lvreg && ((ins->opcode == OP_ICONST) || ((ins->opcode == OP_I8CONST) && (ins->inst_c0 == 0)))) {
13860                                                         ins->opcode = store_membase_reg_to_store_membase_imm (store_opcode);
13861                                                         ins->inst_imm = ins->inst_c0;
13862                                                         ins->inst_destbasereg = var->inst_basereg;
13863                                                         ins->inst_offset = var->inst_offset;
13864                                                         spec = INS_INFO (ins->opcode);
13865                                                 } else if (!lvreg && ((ins->opcode == OP_MOVE) || (ins->opcode == OP_FMOVE) || (ins->opcode == OP_LMOVE) || (ins->opcode == OP_RMOVE))) {
13866                                                         ins->opcode = store_opcode;
13867                                                         ins->inst_destbasereg = var->inst_basereg;
13868                                                         ins->inst_offset = var->inst_offset;
13869
13870                                                         no_lvreg = TRUE;
13871
13872                                                         tmp_reg = ins->dreg;
13873                                                         ins->dreg = ins->sreg2;
13874                                                         ins->sreg2 = tmp_reg;
13875                                                         store = TRUE;
13876
13877                                                         spec2 [MONO_INST_DEST] = ' ';
13878                                                         spec2 [MONO_INST_SRC1] = spec [MONO_INST_SRC1];
13879                                                         spec2 [MONO_INST_SRC2] = spec [MONO_INST_DEST];
13880                                                         spec2 [MONO_INST_SRC3] = ' ';
13881                                                         spec = spec2;
13882                                                 } else if (!lvreg && (op_to_op_store_membase (store_opcode, ins->opcode) != -1)) {
13883                                                         // FIXME: The backends expect the base reg to be in inst_basereg
13884                                                         ins->opcode = op_to_op_store_membase (store_opcode, ins->opcode);
13885                                                         ins->dreg = -1;
13886                                                         ins->inst_basereg = var->inst_basereg;
13887                                                         ins->inst_offset = var->inst_offset;
13888                                                         spec = INS_INFO (ins->opcode);
13889                                                 } else {
13890                                                         /* printf ("INS: "); mono_print_ins (ins); */
13891                                                         /* Create a store instruction */
13892                                                         NEW_STORE_MEMBASE (cfg, store_ins, store_opcode, var->inst_basereg, var->inst_offset, ins->dreg);
13893
13894                                                         /* Insert it after the instruction */
13895                                                         mono_bblock_insert_after_ins (bb, ins, store_ins);
13896
13897                                                         def_ins = store_ins;
13898
13899                                                         /*
13900                                                          * We can't assign ins->dreg to var->dreg here, since the
13901                                                          * sregs could use it. So set a flag, and do it after
13902                                                          * the sregs.
13903                                                          */
13904                                                         if ((!cfg->backend->use_fpstack || ((store_opcode != OP_STORER8_MEMBASE_REG) && (store_opcode != OP_STORER4_MEMBASE_REG))) && !((var)->flags & (MONO_INST_VOLATILE|MONO_INST_INDIRECT)))
13905                                                                 dest_has_lvreg = TRUE;
13906                                                 }
13907                                         }
13908                                 }
13909
13910                                 if (def_ins && !live_range_start [dreg]) {
13911                                         live_range_start [dreg] = def_ins;
13912                                         live_range_start_bb [dreg] = bb;
13913                                 }
13914
13915                                 if (cfg->compute_gc_maps && def_ins && (var->flags & MONO_INST_GC_TRACK)) {
13916                                         MonoInst *tmp;
13917
13918                                         MONO_INST_NEW (cfg, tmp, OP_GC_LIVENESS_DEF);
13919                                         tmp->inst_c1 = dreg;
13920                                         mono_bblock_insert_after_ins (bb, def_ins, tmp);
13921                                 }
13922                         }
13923
13924                         /************/
13925                         /*  SREGS   */
13926                         /************/
13927                         num_sregs = mono_inst_get_src_registers (ins, sregs);
13928                         for (srcindex = 0; srcindex < 3; ++srcindex) {
13929                                 regtype = spec [MONO_INST_SRC1 + srcindex];
13930                                 sreg = sregs [srcindex];
13931
13932                                 g_assert (((sreg == -1) && (regtype == ' ')) || ((sreg != -1) && (regtype != ' ')));
13933                                 if ((sreg != -1) && get_vreg_to_inst (cfg, sreg)) {
13934                                         MonoInst *var = get_vreg_to_inst (cfg, sreg);
13935                                         MonoInst *use_ins = ins;
13936                                         MonoInst *load_ins;
13937                                         guint32 load_opcode;
13938
13939                                         if (var->opcode == OP_REGVAR) {
13940                                                 sregs [srcindex] = var->dreg;
13941                                                 //mono_inst_set_src_registers (ins, sregs);
13942                                                 live_range_end [sreg] = use_ins;
13943                                                 live_range_end_bb [sreg] = bb;
13944
13945                                                 if (cfg->compute_gc_maps && var->dreg < orig_next_vreg && (var->flags & MONO_INST_GC_TRACK)) {
13946                                                         MonoInst *tmp;
13947
13948                                                         MONO_INST_NEW (cfg, tmp, OP_GC_LIVENESS_USE);
13949                                                         /* var->dreg is a hreg */
13950                                                         tmp->inst_c1 = sreg;
13951                                                         mono_bblock_insert_after_ins (bb, ins, tmp);
13952                                                 }
13953
13954                                                 continue;
13955                                         }
13956
13957                                         g_assert (var->opcode == OP_REGOFFSET);
13958
13959                                         load_opcode = mono_type_to_load_membase (cfg, var->inst_vtype);
13960
13961                                         g_assert (load_opcode != OP_LOADV_MEMBASE);
13962
13963                                         if (vreg_to_lvreg [sreg]) {
13964                                                 g_assert (vreg_to_lvreg [sreg] != -1);
13965
13966                                                 /* The variable is already loaded to an lvreg */
13967                                                 if (G_UNLIKELY (cfg->verbose_level > 2))
13968                                                         printf ("\t\tUse lvreg R%d for R%d.\n", vreg_to_lvreg [sreg], sreg);
13969                                                 sregs [srcindex] = vreg_to_lvreg [sreg];
13970                                                 //mono_inst_set_src_registers (ins, sregs);
13971                                                 continue;
13972                                         }
13973
13974                                         /* Try to fuse the load into the instruction */
13975                                         if ((srcindex == 0) && (op_to_op_src1_membase (cfg, load_opcode, ins->opcode) != -1)) {
13976                                                 ins->opcode = op_to_op_src1_membase (cfg, load_opcode, ins->opcode);
13977                                                 sregs [0] = var->inst_basereg;
13978                                                 //mono_inst_set_src_registers (ins, sregs);
13979                                                 ins->inst_offset = var->inst_offset;
13980                                         } else if ((srcindex == 1) && (op_to_op_src2_membase (cfg, load_opcode, ins->opcode) != -1)) {
13981                                                 ins->opcode = op_to_op_src2_membase (cfg, load_opcode, ins->opcode);
13982                                                 sregs [1] = var->inst_basereg;
13983                                                 //mono_inst_set_src_registers (ins, sregs);
13984                                                 ins->inst_offset = var->inst_offset;
13985                                         } else {
13986                                                 if (MONO_IS_REAL_MOVE (ins)) {
13987                                                         ins->opcode = OP_NOP;
13988                                                         sreg = ins->dreg;
13989                                                 } else {
13990                                                         //printf ("%d ", srcindex); mono_print_ins (ins);
13991
13992                                                         sreg = alloc_dreg (cfg, stacktypes [regtype]);
13993
13994                                                         if ((!cfg->backend->use_fpstack || ((load_opcode != OP_LOADR8_MEMBASE) && (load_opcode != OP_LOADR4_MEMBASE))) && !((var)->flags & (MONO_INST_VOLATILE|MONO_INST_INDIRECT)) && !no_lvreg) {
13995                                                                 if (var->dreg == prev_dreg) {
13996                                                                         /*
13997                                                                          * sreg refers to the value loaded by the load
13998                                                                          * emitted below, but we need to use ins->dreg
13999                                                                          * since it refers to the store emitted earlier.
14000                                                                          */
14001                                                                         sreg = ins->dreg;
14002                                                                 }
14003                                                                 g_assert (sreg != -1);
14004                                                                 vreg_to_lvreg [var->dreg] = sreg;
14005                                                                 if (lvregs_len >= lvregs_size) {
14006                                                                         guint32 *new_lvregs = mono_mempool_alloc0 (cfg->mempool, sizeof (guint32) * lvregs_size * 2);
14007                                                                         memcpy (new_lvregs, lvregs, sizeof (guint32) * lvregs_size);
14008                                                                         lvregs = new_lvregs;
14009                                                                         lvregs_size *= 2;
14010                                                                 }
14011                                                                 lvregs [lvregs_len ++] = var->dreg;
14012                                                         }
14013                                                 }
14014
14015                                                 sregs [srcindex] = sreg;
14016                                                 //mono_inst_set_src_registers (ins, sregs);
14017
14018 #if SIZEOF_REGISTER != 8
14019                                                 if (regtype == 'l') {
14020                                                         NEW_LOAD_MEMBASE (cfg, load_ins, OP_LOADI4_MEMBASE, MONO_LVREG_MS (sreg), var->inst_basereg, var->inst_offset + MINI_MS_WORD_OFFSET);
14021                                                         mono_bblock_insert_before_ins (bb, ins, load_ins);
14022                                                         NEW_LOAD_MEMBASE (cfg, load_ins, OP_LOADI4_MEMBASE, MONO_LVREG_LS (sreg), var->inst_basereg, var->inst_offset + MINI_LS_WORD_OFFSET);
14023                                                         mono_bblock_insert_before_ins (bb, ins, load_ins);
14024                                                         use_ins = load_ins;
14025                                                 }
14026                                                 else
14027 #endif
14028                                                 {
14029 #if SIZEOF_REGISTER == 4
14030                                                         g_assert (load_opcode != OP_LOADI8_MEMBASE);
14031 #endif
14032                                                         NEW_LOAD_MEMBASE (cfg, load_ins, load_opcode, sreg, var->inst_basereg, var->inst_offset);
14033                                                         mono_bblock_insert_before_ins (bb, ins, load_ins);
14034                                                         use_ins = load_ins;
14035                                                 }
14036                                         }
14037
14038                                         if (var->dreg < orig_next_vreg) {
14039                                                 live_range_end [var->dreg] = use_ins;
14040                                                 live_range_end_bb [var->dreg] = bb;
14041                                         }
14042
14043                                         if (cfg->compute_gc_maps && var->dreg < orig_next_vreg && (var->flags & MONO_INST_GC_TRACK)) {
14044                                                 MonoInst *tmp;
14045
14046                                                 MONO_INST_NEW (cfg, tmp, OP_GC_LIVENESS_USE);
14047                                                 tmp->inst_c1 = var->dreg;
14048                                                 mono_bblock_insert_after_ins (bb, ins, tmp);
14049                                         }
14050                                 }
14051                         }
14052                         mono_inst_set_src_registers (ins, sregs);
14053
14054                         if (dest_has_lvreg) {
14055                                 g_assert (ins->dreg != -1);
14056                                 vreg_to_lvreg [prev_dreg] = ins->dreg;
14057                                 if (lvregs_len >= lvregs_size) {
14058                                         guint32 *new_lvregs = mono_mempool_alloc0 (cfg->mempool, sizeof (guint32) * lvregs_size * 2);
14059                                         memcpy (new_lvregs, lvregs, sizeof (guint32) * lvregs_size);
14060                                         lvregs = new_lvregs;
14061                                         lvregs_size *= 2;
14062                                 }
14063                                 lvregs [lvregs_len ++] = prev_dreg;
14064                                 dest_has_lvreg = FALSE;
14065                         }
14066
14067                         if (store) {
14068                                 tmp_reg = ins->dreg;
14069                                 ins->dreg = ins->sreg2;
14070                                 ins->sreg2 = tmp_reg;
14071                         }
14072
14073                         if (MONO_IS_CALL (ins)) {
14074                                 /* Clear vreg_to_lvreg array */
14075                                 for (i = 0; i < lvregs_len; i++)
14076                                         vreg_to_lvreg [lvregs [i]] = 0;
14077                                 lvregs_len = 0;
14078                         } else if (ins->opcode == OP_NOP) {
14079                                 ins->dreg = -1;
14080                                 MONO_INST_NULLIFY_SREGS (ins);
14081                         }
14082
14083                         if (cfg->verbose_level > 2)
14084                                 mono_print_ins_index (1, ins);
14085                 }
14086
14087                 /* Extend the live range based on the liveness info */
14088                 if (cfg->compute_precise_live_ranges && bb->live_out_set && bb->code) {
14089                         for (i = 0; i < cfg->num_varinfo; i ++) {
14090                                 MonoMethodVar *vi = MONO_VARINFO (cfg, i);
14091
14092                                 if (vreg_is_volatile (cfg, vi->vreg))
14093                                         /* The liveness info is incomplete */
14094                                         continue;
14095
14096                                 if (mono_bitset_test_fast (bb->live_in_set, i) && !live_range_start [vi->vreg]) {
14097                                         /* Live from at least the first ins of this bb */
14098                                         live_range_start [vi->vreg] = bb->code;
14099                                         live_range_start_bb [vi->vreg] = bb;
14100                                 }
14101
14102                                 if (mono_bitset_test_fast (bb->live_out_set, i)) {
14103                                         /* Live at least until the last ins of this bb */
14104                                         live_range_end [vi->vreg] = bb->last_ins;
14105                                         live_range_end_bb [vi->vreg] = bb;
14106                                 }
14107                         }
14108                 }
14109         }
14110
14111         /*
14112          * Emit LIVERANGE_START/LIVERANGE_END opcodes, the backend will implement them
14113          * by storing the current native offset into MonoMethodVar->live_range_start/end.
14114          */
14115         if (cfg->backend->have_liverange_ops && cfg->compute_precise_live_ranges && cfg->comp_done & MONO_COMP_LIVENESS) {
14116                 for (i = 0; i < cfg->num_varinfo; ++i) {
14117                         int vreg = MONO_VARINFO (cfg, i)->vreg;
14118                         MonoInst *ins;
14119
14120                         if (live_range_start [vreg]) {
14121                                 MONO_INST_NEW (cfg, ins, OP_LIVERANGE_START);
14122                                 ins->inst_c0 = i;
14123                                 ins->inst_c1 = vreg;
14124                                 mono_bblock_insert_after_ins (live_range_start_bb [vreg], live_range_start [vreg], ins);
14125                         }
14126                         if (live_range_end [vreg]) {
14127                                 MONO_INST_NEW (cfg, ins, OP_LIVERANGE_END);
14128                                 ins->inst_c0 = i;
14129                                 ins->inst_c1 = vreg;
14130                                 if (live_range_end [vreg] == live_range_end_bb [vreg]->last_ins)
14131                                         mono_add_ins_to_end (live_range_end_bb [vreg], ins);
14132                                 else
14133                                         mono_bblock_insert_after_ins (live_range_end_bb [vreg], live_range_end [vreg], ins);
14134                         }
14135                 }
14136         }
14137
14138         if (cfg->gsharedvt_locals_var_ins) {
14139                 /* Nullify if unused */
14140                 cfg->gsharedvt_locals_var_ins->opcode = OP_PCONST;
14141                 cfg->gsharedvt_locals_var_ins->inst_imm = 0;
14142         }
14143
14144         g_free (live_range_start);
14145         g_free (live_range_end);
14146         g_free (live_range_start_bb);
14147         g_free (live_range_end_bb);
14148 }
14149
14150
14151 /**
14152  * FIXME:
14153  * - use 'iadd' instead of 'int_add'
14154  * - handling ovf opcodes: decompose in method_to_ir.
14155  * - unify iregs/fregs
14156  *   -> partly done, the missing parts are:
14157  *   - a more complete unification would involve unifying the hregs as well, so
14158  *     code wouldn't need if (fp) all over the place. but that would mean the hregs
14159  *     would no longer map to the machine hregs, so the code generators would need to
14160  *     be modified. Also, on ia64 for example, niregs + nfregs > 256 -> bitmasks
14161  *     wouldn't work any more. Duplicating the code in mono_local_regalloc () into
14162  *     fp/non-fp branches speeds it up by about 15%.
14163  * - use sext/zext opcodes instead of shifts
14164  * - add OP_ICALL
14165  * - get rid of TEMPLOADs if possible and use vregs instead
14166  * - clean up usage of OP_P/OP_ opcodes
14167  * - cleanup usage of DUMMY_USE
14168  * - cleanup the setting of ins->type for MonoInst's which are pushed on the
14169  *   stack
14170  * - set the stack type and allocate a dreg in the EMIT_NEW macros
14171  * - get rid of all the <foo>2 stuff when the new JIT is ready.
14172  * - make sure handle_stack_args () is called before the branch is emitted
14173  * - when the new IR is done, get rid of all unused stuff
14174  * - COMPARE/BEQ as separate instructions or unify them ?
14175  *   - keeping them separate allows specialized compare instructions like
14176  *     compare_imm, compare_membase
14177  *   - most back ends unify fp compare+branch, fp compare+ceq
14178  * - integrate mono_save_args into inline_method
14179  * - get rid of the empty bblocks created by MONO_EMIT_NEW_BRACH_BLOCK2
14180  * - handle long shift opts on 32 bit platforms somehow: they require
14181  *   3 sregs (2 for arg1 and 1 for arg2)
14182  * - make byref a 'normal' type.
14183  * - use vregs for bb->out_stacks if possible, handle_global_vreg will make them a
14184  *   variable if needed.
14185  * - do not start a new IL level bblock when cfg->cbb is changed by a function call
14186  *   like inline_method.
14187  * - remove inlining restrictions
14188  * - fix LNEG and enable cfold of INEG
14189  * - generalize x86 optimizations like ldelema as a peephole optimization
14190  * - add store_mem_imm for amd64
14191  * - optimize the loading of the interruption flag in the managed->native wrappers
14192  * - avoid special handling of OP_NOP in passes
14193  * - move code inserting instructions into one function/macro.
14194  * - try a coalescing phase after liveness analysis
14195  * - add float -> vreg conversion + local optimizations on !x86
14196  * - figure out how to handle decomposed branches during optimizations, ie.
14197  *   compare+branch, op_jump_table+op_br etc.
14198  * - promote RuntimeXHandles to vregs
14199  * - vtype cleanups:
14200  *   - add a NEW_VARLOADA_VREG macro
14201  * - the vtype optimizations are blocked by the LDADDR opcodes generated for
14202  *   accessing vtype fields.
14203  * - get rid of I8CONST on 64 bit platforms
14204  * - dealing with the increase in code size due to branches created during opcode
14205  *   decomposition:
14206  *   - use extended basic blocks
14207  *     - all parts of the JIT
14208  *     - handle_global_vregs () && local regalloc
14209  *   - avoid introducing global vregs during decomposition, like 'vtable' in isinst
14210  * - sources of increase in code size:
14211  *   - vtypes
14212  *   - long compares
14213  *   - isinst and castclass
14214  *   - lvregs not allocated to global registers even if used multiple times
14215  * - call cctors outside the JIT, to make -v output more readable and JIT timings more
14216  *   meaningful.
14217  * - check for fp stack leakage in other opcodes too. (-> 'exceptions' optimization)
14218  * - add all micro optimizations from the old JIT
14219  * - put tree optimizations into the deadce pass
14220  * - decompose op_start_handler/op_endfilter/op_endfinally earlier using an arch
14221  *   specific function.
14222  * - unify the float comparison opcodes with the other comparison opcodes, i.e.
14223  *   fcompare + branchCC.
14224  * - create a helper function for allocating a stack slot, taking into account
14225  *   MONO_CFG_HAS_SPILLUP.
14226  * - merge r68207.
14227  * - optimize mono_regstate2_alloc_int/float.
14228  * - fix the pessimistic handling of variables accessed in exception handler blocks.
14229  * - need to write a tree optimization pass, but the creation of trees is difficult, i.e.
14230  *   parts of the tree could be separated by other instructions, killing the tree
14231  *   arguments, or stores killing loads etc. Also, should we fold loads into other
14232  *   instructions if the result of the load is used multiple times ?
14233  * - make the REM_IMM optimization in mini-x86.c arch-independent.
14234  * - LAST MERGE: 108395.
14235  * - when returning vtypes in registers, generate IR and append it to the end of the
14236  *   last bb instead of doing it in the epilog.
14237  * - change the store opcodes so they use sreg1 instead of dreg to store the base register.
14238  */
14239
14240 /*
14241
14242 NOTES
14243 -----
14244
14245 - When to decompose opcodes:
14246   - earlier: this makes some optimizations hard to implement, since the low level IR
14247   no longer contains the neccessary information. But it is easier to do.
14248   - later: harder to implement, enables more optimizations.
14249 - Branches inside bblocks:
14250   - created when decomposing complex opcodes.
14251     - branches to another bblock: harmless, but not tracked by the branch
14252       optimizations, so need to branch to a label at the start of the bblock.
14253     - branches to inside the same bblock: very problematic, trips up the local
14254       reg allocator. Can be fixed by spitting the current bblock, but that is a
14255       complex operation, since some local vregs can become global vregs etc.
14256 - Local/global vregs:
14257   - local vregs: temporary vregs used inside one bblock. Assigned to hregs by the
14258     local register allocator.
14259   - global vregs: used in more than one bblock. Have an associated MonoMethodVar
14260     structure, created by mono_create_var (). Assigned to hregs or the stack by
14261     the global register allocator.
14262 - When to do optimizations like alu->alu_imm:
14263   - earlier -> saves work later on since the IR will be smaller/simpler
14264   - later -> can work on more instructions
14265 - Handling of valuetypes:
14266   - When a vtype is pushed on the stack, a new temporary is created, an
14267     instruction computing its address (LDADDR) is emitted and pushed on
14268     the stack. Need to optimize cases when the vtype is used immediately as in
14269     argument passing, stloc etc.
14270 - Instead of the to_end stuff in the old JIT, simply call the function handling
14271   the values on the stack before emitting the last instruction of the bb.
14272 */
14273
14274 #endif /* !DISABLE_JIT */